Answers
A geneticist crosses a pure-breeding strain of peas producing yellow, wrinkled seeds with one that is pure-breeding for green, smooth seeds. consider that the f1 are allowed to self-fertilize, predict the f2 progeny that would be expected and answer the following questions: 3/4.
What is genetic cross?
A genetic cross is when two people intentionally mate, combining their genetic makeup in the offspring. Crosses can be carried out in a variety of model systems, such as plants, yeast, flies, and mice, and they can be used to analyse genetic processes or develop new features in animals.
Calculate the proportion of children with straight hair to children with curly hair. Pea plant flower colour is inherited genetically. The pink allele is dominant while the white allele is recessive. A homozygous recessive plant is crossed with a heterozygous plant.
Conidia from genetically marked strains are mixed together, and a heterokaryon is chosen as the result. The ascospores of the heterokaryon's cleistothecia are grown out after being microscopically dissected, freed of peripheral cells that were sticking to them, and crushed.
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Related Questions
In the formation of coal, which stage has the lowest carbon content?
A. bituminous coal
B. lignite
C. anthracite
D. peat
Answers
Answer:
a
Explanation:
Answer:
Peat
Explanation:
Took the quiz
A week bond between two hydrogen molecules;found between water molecules and nucleotides in DNA
Answers
Answer:The weak bond between two hydrogen atoms, which is commonly found between water molecules and nucleotides in DNA, is called a hydrogen bond.
Explanation:
Answer: Hydrogen Bond
Explanation:
A rock can be defined by its texture and composition true or false
Answers
Answer:true
Explanation:im good with rocks
HOMOLOGOUS CHROMOSOMES SEPERATE FROM EACH OTHER WHAT STAGE
Answers
Answer:
Homologous chromosomes separate from each other during anaphase I of meiosis.
Explanation:
Meiosis is a specialized type of cell division that occurs in sexually reproducing organisms. It involves two rounds of cell division, known as meiosis I and meiosis II, which result in the formation of haploid gametes (sperm or eggs) with half the number of chromosomes as the parent cell.
During meiosis I, homologous chromosomes pair up and exchange genetic material in a process called crossing over. Then, during anaphase I, the homologous chromosomes separate from each other and migrate to opposite poles of the cell. This is followed by telophase I, cytokinesis, and the formation of two new cells, each with a haploid set of chromosomes.
In contrast, during meiosis II, the sister chromatids of each chromosome separate from each other and migrate to opposite poles of the cell, resulting in the formation of four haploid daughter cells.
briefly describe the path of blood as it circulates through the heart
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Read the article and answer the questions. What is CPR and why is it important to us? When should we use CPR? What is the difference between CPR for a infant vs an adult? What are the steps to CPR?
Answers
Cardiopulmonary resuscitation (CPR) can preserve a person's life when their breathing or heartbeat has stopped as a result of an emergency, including a heart attack or a near-drowning.
Cardiopulmonary resuscitation (CPR) can help save a person's life in an emergency situation if their breathing or heart stops. A person is said to be in cardiac arrest when their heart stops beating. The heart cannot continue beating during cardiac arrest, which prevents the brain and lungs from receiving blood.
Although CPR for adults and children is similar, there are some important distinctions you should be aware of. A child's physiology, bone density, and strength are different from those of an adult, therefore while both adult and child CPR require chest compressions and rescue breaths, their application is slightly different. Knowing the distinction between adult and pediatric CPR is crucial if you want to be able to provide life-saving assistance in an emergency. In fact, giving adult CPR to a child may be more harmful than helpful
Procedures for Giving CPR
Determine whether the patient is responsive.Check their pulse and breathing.Call 911.Apply chest compressions as necessary.Recheck your pulse and breathing.This leads us to the conclusion that Cardiopulmonary resuscitation (CPR) is a lifesaving method that's helpful in many cases where someone's breathing or heartbeat has stopped, such as a heart attack or a near-drowning.
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Which factor helps improve the validity of scientific writing?
(Select all that apply)
fully disclosing all facts—even if they do not support the hypothesis
using sources that are peer reviewed
using a very wordy writing style
showing evidence of scientific thinking in the writing
Answers
Answer:
fully disclosing all facts
The genetic information contained in DNA consists of a linear sequence of coding units, known as codons. Each codon consists of three adjacent DNA nucleotides that correspond to a single amino acid in a protein. The E. coli DNA molecule contains 4.7 x 10^6 base pairs. Determine the number of codons that can be present in this DNA molecule.
Answers
Answer:
The correct answer is - 1.57 × 10⁶ codons.
Explanation:
Given:
No. of base pairs in E.coli DNA = 4.70 × 10⁶
we know :
1 codon = 3 DNA nucleotides
Solution:
No. of of base pairs in DNA = No. of nucleotides in a single strand
= 4.70 × 10⁶
It must have 1/3 this number of triplet codons
= 4.70 × 10⁶ / 3
= 1.57 × 10⁶ codons.
Thus, the correct answer is - 1.57 × 10⁶ codons.
what is the difference between cork formation and gum formation in the plants as an immune mechanism
Answers
Answer:
Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.
Explanation:
use the list of choices below for the following question: i. helicase ii. dna polymerase iii iii. ligase iv. dna polymerase i v. primase which of the enzymes covalently connects segments of dna?
Answers
Enzymes which covalently connects segments of DNA is v)primase. So, correct option is v.
Primase is a catalyst that blends short RNA groupings called groundworks. These preliminaries act as a beginning stage for DNA union. Since primase produces RNA particles, the protein is a kind of RNA polymerase. Primase capabilities by integrating short RNA groupings that are reciprocal to a solitary abandoned piece of DNA, which fills in as its format.
Primase is important that groundworks are blended by primase before DNA replication can happen. This is on the grounds that the chemicals that incorporate DNA, which are called DNA polymerases, can join new DNA nucleotides to a current strand of nucleotides. Hence, primase serves to prime and establish a groundwork for DNA blend.
Hence, option v is correct.
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Do you think atrazine should be used? Explain your reasoning
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Atrazine is safe to use so far.
Standards could change if EPA rules atrazine is more hazardous to health than previously thought. Currently, EPA standards allow 3 parts per billion (ppb) or less of atrazine to be present in drinking water.
Visible light is just a small part of all the energy that comes from the sun known as _____________.
Visible light is just a small part of all the energy that comes from the sun known as _____________.
ultraviolet light
infrared radiation
magnetic fields
electromagnetic radiation
Answers
Answer: Elctromagnetic radiation
Explanation:
Which of the following is NOT an example of a biological model? (all answers choices 2nd slide)
Answers
Answer:
pictures of different ecosystems
Explanation:
i got it right
In the last 50 years, the wild population has:
Question 3 options:
A.) Increased by 25%
B.) Stayed the same
C.) Decreased by 90%
D.) Been reduced by 60%
Answers
Answer:
d, been decreased by 60%
Blank provide energy to the ecosystem and convert carbon dioxide into oxygen
A predators
Bheterotrophs
C autotrophs
D consumers
Answers
Answer:
Autotrophs
Explanation: Pennfoster
Which is an example ofa polygenic trait? eye color, which is controlled by many interacting genes a cow’s spot pattern, which is controlled by two dominant genes a plant’s pink flowers, which is controlled by two incomplete genes a plant’s green seeds, which is controlled by one dominant gene
Answers
Answer:
eye color
Explanation:
Answer:
eye color, which is controlled by many interacting genes
Explanation:
identity each adaptation as structural or behavioral adaptations.
v
Monkeys have a prehensile tail that allows them to grab and hold onto tree branches.
Moose make mating calls to locate potential mates.
Whales are covered in a thick layer of blubber, insulating their bodies in cold ocean waters.
Humans have five toes on each foot to help them maintain balance.
Many birds migrate south for the winter in search of food.
Answers
The adaptations can be classified as follows structural adaptations: Monkeys' prehensile tail, whales' blubber, and humans' five toes.
Monkeys have a prehensile tail that allows them to grab and hold onto tree branches.
Adaptation: Structural
Explanation: The prehensile tail is a physical feature of monkeys that enables them to manipulate objects and grasp onto branches, aiding in their ability to move through trees.
Moose make mating calls to locate potential mates.
Adaptation: Behavioral
Explanation: Mating calls are a behavioral adaptation employed by moose to attract and communicate with potential mates, increasing their chances of successful reproduction.
Whales are covered in a thick layer of blubber, insulating their bodies in cold ocean waters.
Adaptation: Structural
Explanation: The thick layer of blubber acts as insulation for whales, providing them with protection against the cold temperatures of the ocean environment.
Humans have five toes on each foot to help them maintain balance.
Adaptation: Structural
Explanation: The presence of five toes on each foot in humans provides structural support and stability, aiding in maintaining balance while walking or standing.
Many birds migrate south for the winter in search of food.
Adaptation: Behavioral
Explanation: Migration is a behavioral adaptation exhibited by many bird species as they move from one region to another, typically during seasonal changes, to find better food sources and suitable habitats.
Behavioral adaptations: Moose's mating calls and birds' migration.
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in which biome are minerals in the soil most rapidly depleted
Answers
Answer:
Boreal forest is among the largest terrestrial biomes on earth in which minerals in the soil most rapidly depleted.
How do cnidarians in the medusa formmove through the water?A. the gastrovascular cavity fills with water and allowsthem to floatB. their tentacles spin causing a propeller motionC. the tentacles move along the ocean floor like feetD. water is brought into the gastrovascular cavity andthen expelled which propels them forward
Answers
The medusas (cnidarians) is a free-swimming form organism, that is able to move through the water by rhythmic muscular constractions of the bell part (jet propulsion) of their body. Therefore, the correct alternative is the one that says: D. water is brought into the gastrovascular cavity and then expe
what are the consequences of overdrawal of water?
Answers
Answer:
As the water table goes low, water may not be easily obtained leading to it scarcity. Overdrawal of water can also lead to sinking or lowering of the land surface that can make it prone to flooding. Streams and water bodies may also get disconnected due to over-withdrawal of water.
How does exhaling remove waste from the body? Explain the systems that make this happen, using complete sentences.
Answers
Exhaling removes waste from the body by expelling carbon dioxide through the respiratory system.
Exhaling plays a crucial role in removing waste from the body, particularly in the form of carbon dioxide (CO2), a byproduct of cellular respiration. The respiratory system, composed of the lungs and airways, is primarily responsible for this process.During inhalation, air containing oxygen is drawn into the lungs through the nose or mouth. Oxygen then diffuses across the lung tissue into the bloodstream, where it binds to hemoglobin and is transported to cells throughout the body. In the cells, oxygen is utilized in metabolic processes, generating energy and producing CO2 as a waste product.When we exhale, the diaphragm and intercostal muscles relax, causing the volume of the chest cavity to decrease. This action increases the pressure within the lungs, and air rich in CO2 is expelled from the body through the airways. The CO2 is removed from the bloodstream and eliminated from the body, reducing the waste buildup.Overall, the respiratory system's main function is to facilitate the exchange of gases, allowing oxygen to enter the body and carbon dioxide to be eliminated. Exhalation plays a vital role in removing waste by expelling CO2 and maintaining a balanced gas composition within the body.For more questions on respiratory
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What spheres of the Earth will be affected by the volcanic eruption and how does it affects? Make 3 sentences.
Answers
What do you think some of the negative consequences of gender socialization could be?
Answers
One negative consequence of gender socialization is the reinforcement of gender stereotypes. Stereotypes are oversimplified and often inaccurate beliefs about groups of people, and they can lead to discrimination and prejudice. Gender stereotypes can limit individual choices and opportunities, as well as contribute to gender-based violence and other forms of inequality.
Another negative consequence of gender socialization is the pressure to conform to traditional gender roles and expectations. This pressure can limit individual expression and creativity, and it can also contribute to mental health issues such as anxiety and depression.
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Ida's mother has blue eyes and her father has brown eyes. DNA analysis shows that Ida carries alleles for both blue and brown, but her eyes are brown. What does this make Ida's brown allele?
Recessive
Dominant
Codominant
Sex-linked
Answers
A teacher shows the class a plant and asks the students to predict the biome the plant is from. Which of the following sets of
questions would be MOST helpful to the students in determining the correct biome for the plant?
A. What temperature range is needed for the plant to thrive?
How much water does the plant need?
OB. Does the plant produce flowers?
If yes, what organism pollinates the flowers?
C. What, if any, animals use this plant for food?
What does the plant taste like?
O D. How big is the container the plant is in?
How tall does the plant grow in its natural environment?
Ok
Answers
Answer:
A
Explanation:
I guess
Option A would be the most helpful set of questions in determining the correct biome for the plant. Temperature range: The temperature range needed for a plant to thrive is a crucial factor in determining the biome it belongs to. Water needs: The amount of water a plant needs also depends on the biome it belongs to.
What is a Biome?A biome is a large, distinct ecological community of plants and animals that occupies a particular habitat. Biomes are characterized by their unique climate, geology, and vegetation, and are typically categorized by the dominant forms of plant life that exist in them.
Some examples of biomes include tropical rainforests, deserts, grasslands, and tundras. Each biome contains a diverse array of species that have adapted to survive and thrive in their specific environmental conditions.
By answering these two questions, the students can narrow down the possible biomes the plant belongs to. For example, if the plant needs a lot of water and warm temperatures, it might belong to a tropical rainforest biome. On the other hand, if it needs less water and can tolerate colder temperatures, it might belong to a temperate forest or grassland biome.
Hence option A is correct.
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Please help me guys!!
Describe what happened to the deer and wolf populations between 1971 and 1980. How did the number of wolves affect the number of deer?
Answers
Answer:
as the deer pop. increased, the low pop. of starving wolves increased since there are more preys, but the wolves pop. marginally declined as the deer pop. went down.
The changes in the deer and wolf populations between 1971 and 1980 were that the deer population decreased due to an increase in the number of wolves.
What is population?The term population is commonly used to refer to the number of individuals in a given area.
It should be noted that wolves are deer predators, so the wolves kill and eat the deers. In this case, as the wolf population grows, they will hunt and kill deer. This will result in a decrease in the deer population.
In this case, an increase in the wolf population will result in a decrease in the deer population.
On the other hand, assuming the wolf population was reduced, this would have resulted in an increase in the deer population.
Thus, this can be concluded regarding the given scenario.
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Can any wan help me pls :(
Answers
Answer:
the picture is blurry I do not understand
If sea otters were removed from the food web, what effect would that have on other tropic levels?
A. The kelp population would increase in size
B. The kelp population would decrease in size.
C. The elephant seal population would start eating kelp.
D. The population of kelp crabs would immediately decrease.
E. The population of sea urchins would immediately decrease
Answers
Answer:
E. The population of sea urchins would immediately increase, which could lead to a decrease in the size of the kelp population over time as the sea urchins consume more kelp.
Explanation:
If sea otters were removed from the food web, the population of sea urchins would immediately increase. This is because sea otters are a natural predator of sea urchins, and they help to control the sea urchin population. When sea otters are removed, the sea urchin population can grow rapidly and consume large amounts of kelp, which is a primary food source for many organisms in the ecosystem.
Therefore, the answer is E. The population of sea urchins would immediately increase, which could lead to a decrease in the size of the kelp population over time as the sea urchins consume more kelp.
how china is taking jobs from the world?
Answers
The current U.S. administration sees China as the United States’s principal global rival, and it has effectively declared economic war on the country. Its justification for this is largely that China is (1) stealing American jobs and (2) pirating American intellectual property. Data collected by the Long US-China Institute suggest that China is far less guilty of these crimes than many policymakers and commentators would have us believe.
As the exhibit just below shows, consumer incomes in both countries have enjoyed continuous growth in purchasing power since 1985. Only two years of decline are discernable in the U.S. trendline: 2008 and 2009, coinciding with the 2008/9 recession.
where is the transport vesels found
Answers
Answer:
The xylem transports water and minerals from the roots up the plant stem and into the leaves. In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels. Vessels: Lose their end walls so the xylem forms a continuous, hollow tube.
Explanation: