Alternation of generations means that plants produce.

Answers

Answer 1

Answer:

Plants produce both haploid gametes and haploid spores in alternation of generations.

Explanation:

In alternation of generations, the multicellular haploid form, known as a gametophyte, is followed in the developmental sequence by a multicellular diploid form, the sporophyte. During this process, plants produce gametes and spores. Gametes are always haploid, and spores are always haploid in the plant alternations of generations life cycle, but may not be haploid in plants that do not undergo alternation of generations.

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Related Questions

1. How many # of chromosomes are in each daughter cell in mitosis?

2. How many # of chromosomes are in each daughter cell in meiosis?

Answers

1. In mitosis there is 30 chromosomes
2. In meiosis there is 23 chromosomes

A sandwich shop sells 4 veggie subs for every 5 turkey subs. The shop sold 27 subs today. How many of each kind did they sell? i need help plz !!!!!!!!!!!! due 1:00

Answers

Answer:

3 each

Explanation:

The question said 4 veggie subs for every 5 turkey subs.

So every time 5 turkey subs were sold it lead to the increase of both

what does allele frequency tell you about a population

-The number of alleles each individual has

-The number of different individuals in a population

The number of different alleles in a population

Answers


The answer is: the number of different alleles in a population.


So let’s do an example:

Allele frequency tells you how common (frequent) an allele is.
An allele is a version of a gene.

let’s say theres a gene (instruction) for eye colour. And We can make different types of eyes.
brown, green, blue.

So we can say the gene (instructions) has 3 alleles (3 variations)

If you have an high allele frequency for the brown allele in group A. It means that brown eyes are super common in group a.

Now It can get a little complicated and the details are not needed for this question. if you want an slightly more in-depth explanation but I’ve added a little detail bellow:


There are three things that can happen in genetics.

1) You can have an allele for brown eyes and have brown eyes, (it shows in your phenotype)
2) You can have the allele for brown eyes and NOT have brown eyes (it doesn’t get expressed so it doesn’t show up in the person). Here you have the genetic code for it but you don’t express it. It doesn’t actually show up so you end up with blue eyes or something.

or
3) you can not have the allele for brown eyes so it’s not in your genetics and it doesn’t show up in your phenotype.

If there. Is a high allele frequency for brown eyes. It means that we analysed the genetic code of everyone in group A and found that a lot of people in this group have the allele for brown eyes EVEN the people who don’t show brown eyes in their phenotype.

If this is a little confusing please don’t worry you don’t need this level of detail to understand this question.


The answer for this question is: the number of different alleles in a population.

Which example is a trait of a index fossil

Answers

Answer: Brachiopods

Explanation:

they emerged 550 million years ago

The ecosystem we call the human body is also affected by abiotic components. List at least three abiotic components that could be in a human body ecosystem.

Answers

Answer:

The factors are:

Temperature

Light

Water

Explanation:

these abiotic factors work together to create a unique ecosystem

compare the plants that live underwater to the plants ended above-ground what are similarities and how these plants survive what are differences ​

Answers

Answer:

Land plants are typically taller than wide and have a branched root system. Water plants are typically wider and have spongier leaves, which allow the plant to float on water. Aquatic plants don't root down into the soil. Their roots hang in the water and they're able to move around.

Explanation:

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What do you think of the butterfly effect. Use at least one example.

Answers

a butterfly flapping its wings and causing a typhoon

The butterfly effect is the concept in chaos theory that small initial differences in the starting conditions of a nonlinear system can lead to vastly different outcomes in the future, and one example of the butterfly effect is weather forecasting.

What is the butterfly effect?

The butterfly effect is a concept that originated in the field of chaos theory, which studies the behavior of nonlinear systems that are highly sensitive to initial conditions. The idea of the butterfly effect comes from the analogy that the flap of a butterfly's wings in one part of the world could ultimately cause a hurricane in another part of the world, due to the complex interactions and feedback loops within the Earth's atmosphere. This concept has been applied to many different fields, including physics, biology, economics, and the social sciences.

Hence, the butterfly effect is the concept in chaos theory that small initial differences in the starting conditions of a nonlinear system can lead to vastly different outcomes, and an example of the butterfly effect is weather forecasting.

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Suggest how a sports physiologist could help a professional athlete to improve their performance

Answers

Answer:

Sports Psychology has been shown to speed up the rehabilitation process and assist the injured athlete in the development of an improved attitude and approach to rehabilitation. Sports Psychology may be an important variable in improving performance in an assortment of sports skills.

Which of the following statements best describes the difference between aerobic and anaerobic metabolism?
Check all that apply.
- Anaerobic metabolism produces more ATP than aerobic metabolism.
- Anaerobic metabolism produces less ATP than aerobic metabolism.
- Only aerobic metabolism can occur in the absence of oxygen.
- Anaerobic metabolism does not produce lactate while aerobic metabolism does.
- Both anaerobic and aerobic metabolism run through glycolysis, Krebs cycle, and the electron transport chain.
- Only anaerobic metabolism can occur in the absence of oxygen.
- Anaerobic metabolism produces lactate while aerobic metabolism does not.

Answers

The correct statements are:

- Only aerobic metabolism can occur in the absence of oxygen.

- Both anaerobic and aerobic metabolism run through glycolysis, Krebs cycle, and the electron transport chain.

- Anaerobic metabolism produces lactate while aerobic metabolism does not.

Aerobic metabolism refers to the metabolic processes that occur in the presence of oxygen. It involves the complete breakdown of glucose or other fuel molecules through glycolysis, the Krebs cycle (also known as the citric acid cycle or TCA cycle), and the electron transport chain. This process produces a larger amount of ATP (adenosine triphosphate) compared to anaerobic metabolism. Anaerobic metabolism, on the other hand, occurs in the absence of oxygen or in situations where oxygen supply is limited. It mainly relies on glycolysis, the initial stage of glucose breakdown, to produce energy. Anaerobic metabolism generates a smaller amount of ATP compared to aerobic metabolism. Both anaerobic and aerobic metabolism involve glycolysis, the Krebs cycle, and the electron transport chain. However, the subsequent steps after glycolysis differ. In anaerobic metabolism, the end product is lactate, while in aerobic metabolism, the end product is carbon dioxide and water. Lactate production is a characteristic of anaerobic metabolism and can accumulate in tissues during intense exercise.

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Why is the cheetah gene pool small today?

Answers

When a natural disaster dropped their total world population down to less than seven individual cheetahs.

Even though the number of cheetahs grew to as many as 100,000 during the 19th century, their genetic variability remained low due to the extreme bottleneck event that took place thousands of years previously.

Do oomecytes have a relationship with any other organisms?

Answers

Answer:

Yes

Explanation:

. Oomycetes are classified in the kingdom Protoctista and are related to heterokont, biflagellate, golden-brown algae.

Define the following terms in Genetics and give an example for each terms: 1) Complete dominant, 2) Incomplete dominant, 3) Co-Dominant

Answers

Genetics is the branch of biology that studies how traits are passed down from one generation to the next.

Here are the definitions and examples of the three types of dominance in genetics:1) Complete dominant: This occurs when one allele completely dominates over the other. In a heterozygous genotype, the dominant allele will always be expressed. For example, if a pea plant with the genotype Rr (where R is the dominant allele for round seeds and r is the recessive allele for wrinkled seeds) is crossed with a homozygous dominant pea plant (RR), all of the offspring will have round seeds because the dominant R allele completely masks the recessive r allele.2) Incomplete dominant: This occurs when neither allele is completely dominant over the other, resulting in a blending of the two traits. In a heterozygous genotype, a third phenotype is expressed which is a combination of the two alleles. For example, if a red flower (RR) is crossed with a white flower (WW), the F1 generation will all be pink (RW).3) Co-dominant: This occurs when both alleles are equally dominant and both traits are expressed in the phenotype. In a heterozygous genotype, both alleles are expressed without one dominating the other. For example, in the human blood type, the A and B alleles are co-dominant. If a person has both A and B alleles, they will have the AB blood type.

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Which statement describes a host organism? A host shares nutrients with a parasite. A host loses nutrients to a parasite. A host immediately kills a parasite. A host is immediately killed by a parasite.

Answers

Answer:

A host loses nutrients to a parasite.

Explanation:

A host-parasite relationship is called parasitic symbiotic relationship which means the host loses its nutrients to a parasite (host is harmed), and parasite whether endoparasite or exoparasite gets nutrients (parasite is benefited).

Hope this helps ;) ❤❤❤

Answer:

A host loses nutrients to a parasite.

Explanation:

Starting in 1850 when Europe become industrialized, the frequency of melanic forms of the peppered moth in populations ______ until they made up ______ of some population.

Answers

Answer:

increased; almost 100%

Explanation:

The peppered moth witnessed a change in its color and the number at the end of the eighteenth century. The reason behind this was the Industrial Revolution that led to an increase in air pollution. With the increase in air pollution, the dark-colored moths increased in the number. Later, when air pollution decreased, the light-colored moths started to predominate. It was in 1895 that the number of dark-colored moths increased to the maximum.

True or false? The inner cell mass of the blastocyst becomes the embryo, while the outer cell layer of the blastocyst forms part of the placenta.

Answers

True, the inner cell mass of the blastocyst becomes the embryo, while the outer cell layer of the blastocyst forms part of the placenta.

What is a blastocyst?

A blastocyst is a fertilized egg's clump of dividing cells. It's an embryo in its early stages. A blastocyst is one of the steps that lead to pregnancy.

Five to six days after a sperm fertilizes an egg, a blastocyst develops. Cell layers of the blastocyst divide and separate. They will eventually evolve into structures that will safeguard and nourish the developing embryo.

A fertilized egg's blastocyst stage is critical for in-vitro fertilization (IVF). IVF is the procedure of developing an embryo outside of the body of the birthing parent in order to aid in pregnancy.

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explain how the following concept could encourage teenagers to end up being parent before the right time:
- peer pressure
- social grants
- culture ​

Answers

peer pressure is the answer

Which Gas Giant is farthest from the sun?

Answers

Answer:

Neptune

Explanation:

Answer:

Neptune

Explanation:

For about 20 years of every 250 years, Neptune is the FARTHEST planet in our solar system. NEPTUNE sometimes switches places with Pluto as the planet in our solar system farthest from the Sun.

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Which type of blood vessel is most likely to clot and cause a stroke or a heart attack

Answers

Answer:

The middle cerebral artery is most often blocked during a stroke.

Explanation:

Why do you have two sets of chromosomes? Where did the two sets come from?

Answers

Answer:

We have two sets of chromosomes because we're diploid organisms: the most obvious function of this is that two parents can mix and match their genes in (figurative) hopes of getting some optimum combination in at least some of their offspring.

Explanation: Parents had the smash and their genes were passed on.

Please help !!! a b c d ?

Please help !!! a b c d ?

Answers

25% it’s a one in four chance

Answer:

C-25%

Explanation:

C because there is a 75% chance they will get freckles, which means that there’s 25% that they won’t have freckles, which is letter C.

what does each phases of mitosis do in 2 short sentences each

Answers

Answer:

it can not be in 2 sentece

1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister chromatids are pulled to opposite poles of the cell 4) Telophase: nuclear envelope .

Scientific models are based on a set of observations.
Please select the best answer from the choices provided
OT
0 F

Answers

Answer:

Scientific models are based on a set of observations. Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made. ... Scientists utilize models for a variety of different purposes, but each type of scientific model has limitations.

Explanation:

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HELP PLS: NEED ANSWER ASAPPPPPPPPPPPP <3
1. Explain acid deposition. Your explanation should include the following:

• The sources of acid deposition

• The chemical equations involved in acid deposition formation

• An explanation of the types of acid deposition

• A discussion of the effects of acid deposition

• A drawing that shows the sources, formation, and precipitation of acid deposition

Answers

Acid deposition is the deposition of acidic compounds from the atmosphere to the Earth's surface. It is caused by natural sources like volcanoes and human activities such as burning fossil fuels. Chemical equations include \(SO_2\) + \(O_2\) + \(H_2O\) → \(H_2SO_4\) and NOx + \(O_2\) + \(H_2O\) → \(HNO_3\). Acid deposition can be wet or dry, harming ecosystems and causing damage to structures. The effects of acid deposition are far-reaching. It can lead to the acidification of lakes, rivers, and soils, which can harm aquatic ecosystems and affect the growth and survival of plants and animals. Acid deposition can also damage buildings, statues, and monuments made of limestone or marble, as these materials are particularly susceptible to erosion by acids.

Acid deposition refers to the deposition of acidic compounds from the atmosphere onto the Earth's surface.

Sources of acid deposition include natural sources like volcanic emissions and the oxidation of sulfur and nitrogen compounds, as well as human activities like burning fossil fuels.

The chemical equations involved in acid deposition formation are:

  a. Formation of sulfuric acid: \(SO_2\) + \(O_2\) + \(H_2O\) → \(H_2SO_4\)

  b. Formation of nitric acid: NOx + \(O_2\) + \(H_2O\) → \(HNO_3\)

Acid deposition can be classified into two types: wet deposition and dry deposition.

  a. Wet deposition occurs when acidic pollutants dissolve in precipitation and are deposited onto the Earth's surface.

  b. Dry deposition happens when acidic particles and gases settle directly onto the ground or other surfaces without being dissolved in precipitation.

The effects of acid deposition include the acidification of lakes, rivers, and soils, which can harm aquatic ecosystems and affect plant and animal life. It can also cause damage to buildings, statues, and monuments made of limestone or marble.

A visual representation of the sources, formation, and precipitation of acid deposition can be illustrated through a diagram or drawing. This can show the emission sources, chemical reactions, and the deposition of acidic compounds onto the Earth's surface.

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HELP PLS: NEED ANSWER ASAPPPPPPPPPPPP &lt;31. Explain acid deposition. Your explanation should include

The energy in kilojoules (kJ) available at a trophic level from another level below can be represented with the
following equation:
y = (p') x
Click on each blank box to select the description that matches each variable in the equation.
Equation Variables
Description
Variable
y
P
n
X

Answers

Description:
Variable
y: The energy in kilojoules (kJ) available at a trophic level from another level below.
P: The energy in kilojoules (kJ) available at the lower trophic level.
n: Not specified in the given equation.
X: The transfer efficiency or proportion of energy transferred from the lower trophic level to the higher trophic level.

The cardiac notch is the indentation located on the ______ surface of the left lung that accommodates the heart.

Answers

The cardiac notch is the indentation located on the medial surface of the left lung that accommodates the heart.

The cardiac notch is a concave region found on the medial surface of the left lung. It is specifically designed to create space for the heart, allowing it to fit snugly against the lung. The heart is positioned slightly to the left side of the midline, and the cardiac notch provides a space for the heart's left ventricle. This indentation contributes to the unique shape of the left lung and helps facilitate the close relationship between the heart and the left lung. It is important for the proper anatomical positioning and functioning of both the heart and the lung

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detection of emphysema progression in alpha 1-antitrypsin deficiency using ct densitometry; methodological advances.

Answers

Emphysema progression in individuals with alpha 1-antitrypsin deficiency can be detected using CT densitometry, which is a method that measures the lung density on computed tomography scans. This technique has seen methodological advances in recent years, improving its accuracy and effectiveness.

Here is a step-by-step explanation of how CT densitometry can be used to detect emphysema progression in alpha 1-antitrypsin deficiency:

1. Computed tomography (CT) scans. CT scans are used to generate detailed cross-sectional images of the lungs. These images can provide valuable information about the density of lung tissue.

2. Measurement of lung density. CT densitometry involves analyzing the CT scan images to measure the lung density. In emphysema, there is a destruction of lung tissue, leading to increased air spaces and reduced lung density.

3. Hounsfield Unit (HU) measurements. Lung density is quantified using a unit called the Hounsfield Unit (HU). HU values range from -1000 to +1000, with lower values indicating lower lung density (more emphysema).

4. Region of interest (ROI) analysis. To measure lung density, specific regions of interest (ROIs) are selected on the CT scan images. These ROIs are usually chosen in the lung parenchyma, away from areas affected by blood vessels or bronchi.

5. CT densitometry algorithms. Advanced algorithms have been developed to analyze the HU measurements within the ROIs and calculate various parameters related to lung density. These algorithms can provide quantitative measurements of emphysema severity and track its progression over time.

6. Follow-up CT scans. To monitor emphysema progression, follow-up CT scans are performed at regular intervals. The changes in lung density and the specific CT densitometry parameters are compared between the initial and follow-up scans. By utilizing CT densitometry and these methodological advances, healthcare professionals can effectively detect and monitor emphysema progression in individuals with alpha 1-antitrypsin deficiency. This information is crucial for making treatment decisions and evaluating the effectiveness of interventions.

About Emphysema

Emphysema is a disease that attacks the organs in the lungs. The most common cause of this disease is smoking for many years. Emphysema is included in the COPD (Chronic Obstructive Pulmonary Disease) group. The first feature of emphysema is short, irregular breathing. The sufferer may suddenly experience shortness of breath. This occurs due to an infection in the lung sac so that someone who suffers from this disease will experience bad respiratory conditions.

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%rsp is 0xdeadbeefdeadd0d0. what is the value in %rsp after the following instruction executes? pushq %rbx (a) 0xdeadbeefdeadd0d4 (b) 0xdeadbeefdeadd0d8 (c) 0xdeadbeefdeadd0cc (d) 0xdeadbeefdeadd0c8

Answers

Correct option is (c) 0xdeadbeefdeadd0cc will be the value in%rsp once the next instruction (pushq%rbx) has been executed.

What does the %RSP indicate?

According to convention, %rsp always refers to the stack address that is presently being utilised at the bottom (left). As a result, when a function defines a new local variable, %rsp must shift to the left (down), and when a function returns, %rsp must move to the right (up), returning to its previous position.

Which end of the stack does RSP point to?

Remember that the stack pointer, %rsp, always directs attention to the top of the stack. The base pointer, sometimes referred to as the frame pointer, is represented by the register%rbp and refers to the base of the active stack frame.

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a pure strain goat with blacked colored fur was crossed with a pure strain goat with white colored fur all the offspring had black colored fur.
i) with the aid of a genetic diagram, determine the phenotypic ratio of the f2 generation if the offspring are selfed .
ii) what would be the outcome of mating a black heterozygote offspring from the f2 generation with the original black colored parent

Answers

i) If a pure strain black goat (BB) is crossed with a pure strain white goat (bb), all the offspring in the F1 generation will be heterozygous black (Bb). If these offspring are selfed (crossed with each other), the phenotypic ratio of the F2 generation will be 3 black: 1 white.

ii) If a black heterozygote offspring from the F2 generation (Bb) is mated with the original black colored parent (BB), all of their offspring will be black. Half of them will be homozygous dominant (BB) and half will be heterozygous (Bb).

Here's a genetic diagram to help you visualize this:

```

| B | b

--+-----+-----

B | BB | Bb

--+-----+-----

B | BB | Bb

```

All of the offspring from this cross will have at least one dominant allele (B), so they will all have black fur.

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what is the result of a point mutation that changes a template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5'?

Answers

The result of a point mutation that changes a template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5' is that the ninth nucleotide in the sequence has changed from an "A" (Adenine) to a "C" (Cytosine). This is known as a substitution mutation since one nucleotide has been swapped for another.

The resulting amino acid is changed due to a point mutation that changes a template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5'.

Point mutation is the substitution of one nucleotide for another in a gene's DNA sequence, which may have no effect, produce a different amino acid, or prevent the gene from functioning properly. Since each codon in a gene's DNA sequence corresponds to a specific amino acid, changing the nucleotide sequence can change the amino acid sequence.

As a result, the resulting amino acid will be different because of the point mutation that changes the template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5'.

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A mother with a blood type of A has a son with
a blood type of B. Which of the following are
possible? Select all that apply.

Answers

Answer:

b blood

Explanation:

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What part of terminology is -oma?What part of terminology is Hemat-? question 3 your manager has asked you to take over the task of creating a rota for the team. this will cover breaks for the coming week. you decide to use one of the templates provided with word to get you started rather than beginning with a completely blank page. what could be included in the template that you pick? select all options that apply. Key Ideas and Details: What is the central idea of the poem? What details does the speaker use to help readers understand the central idea? The Beranek Company, whose stock price is now $30, needs to raise $13 million in common stock. Underwriters have informed the firm's management that they must price the new issue to the public at $25 per share because of signaling effects. The underwriters' compensation will be 6% of the issue price, so Beranek will net $23.50 per share. The firm will also incur expenses in the amount of $165,000. How many shares must the firm sell to net $13 million after underwriting and flotation expenses A race-car of mass m negotiates a right hand 90o turn at constant speed v on a banked road that makes an angle with respect to horizontal. The radius of the turn is given by r and the time the car takes to go around the banked turn is t . The car makes the turn at high speed and, after making the banked turn, the car continues down a straight segment of road.(A) Draw a free-body diagram which shows the forces acting on the car. Assume rolling friction and air drag are negligible (and that no propulsion force is required to maintain a constant speed). Include your coordinate axes in your drawing.(B) Use Newton's second law to write an equation for the resulting centripetal force. Then solve the equation for the normal force of road on the tires in terms of: the mass of the car m, the radius of the curve r, time to make the curve t, banked angle , and any needed constants of proportionality. 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