During meiosis the pair of homologous chromosomes separate randomly with one of each pair going to the daughter cell. This is called random segregation. If a cell has three pairs of chromosomes then meiosis can produce eight different combinations of chromosomes. Try working this out for yourself using two different colours to represent each homologous pair.​

Answer:

Yes.

Explanation:

Bacteria are the simplest of creatures that are considered alive. Bacteria are everywhere. They are in the bread you eat, the soil that plants grow in, and even inside of you. They are very simple cells that fall under the heading prokaryotic. You don't usually get infected by dead bacteria, because  They get recycled. Unlike larger organisms, when single-celled organisms die, they usually undergo a process called lysis, in which the cell membrane disintegrates.

Lamarck's theory of Inheritance of Acquired Characteristics proposed that an organism experiences modification that can be transmitted to its offspring. However, Darwin's Theory of Natural selection disproved the Lamarckian theory. Many biologists have tested this theory (Lamarckian theory) and the result is, more evidence is being demonstrated that the traits and behavior of organisms were the results of natural selection; hence, these changes are mainly controlled by genes.

RNA, or ribonucleic acid, is a type of polynucleotide that is typically single-stranded and composed of nucleotides. Nucleotides are the building blocks of RNA and are made up of three components: a sugar molecule, a phosphate group, and a nitrogenous base.

RNA stands for Ribonucleic acid. It is a molecule that plays a critical role in various biological processes. RNA is made up of nucleotides, which are the building blocks of RNA. These nucleotides contain a sugar molecule, a phosphate group, and a nitrogenous base. RNA serves as a messenger between DNA and ribosomes, which are cellular structures that synthesize proteins. RNA carries genetic information from DNA to the ribosomes, where it is used to assemble proteins. This process is called transcription.

There are different types of RNA, including messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). Each type has a specific function in protein synthesis. For example, mRNA carries the genetic information from DNA to ribosomes, tRNA helps in the assembly of amino acids to form proteins, and rRNA forms the core structure of ribosomes.

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The given statement: A Polymerase Chain Reaction (PCR) reaction begins with 8 double-stranded segments of DNA is FALSE because a PCR typically begins by denaturing the double-stranded DNA template into two single-stranded DNA molecules

PCR (Polymerase Chain Reaction) amplifies a specific region of DNA through a series of cycles of denaturation, annealing, and extension. It does not start with pre-existing double-stranded DNA segments.

Instead, it requires a template DNA, usually a small amount of double-stranded DNA, which is denatured to generate two single-stranded DNA molecules. The reaction mixture then cools, allowing short primers to anneal to the single-stranded DNA template at the desired location.

The primers provide a starting point for the DNA polymerase to synthesize a new strand of DNA. This process results in the amplification of the DNA region between the two primers, with each cycle doubling the amount of DNA. Therefore, the starting material for a PCR reaction is a small amount of double-stranded DNA that will be denatured to form single-stranded DNA templates for amplification.

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The biotic factor in the environment of an aquatic mammal "ph gut flora" as it refers to the microorganisms present in the digestive system of the aquatic mammal, which is a living component of the environment and thus a biotic factor.

Biotic factors are any living components of an ecosystem, including plants, animals, fungi, and microorganisms.

In the case of aquatic mammals, their gut flora is an important part of their digestive system and helps them break down food, absorb nutrients, and maintain their health.
Among the given options, only the gut flora is considered a biotic factor in the environment of an aquatic mammal.

The other options - salinity, oxygen concentration, temperature - are abiotic factors as they refer to non-living components of the environment.

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Muscles of the hips and ankles are involved at the hips, knees, and ankles as the athlete jumps. The muscles of the arm, forearm, and hand are involved as the athlete shoots the basketball.

When landing from a jump, the muscles of the hips (gluteals), knees (quadriceps and hamstrings), and ankles (calves) that increase jump height are just as important. The flexors of the arm (anterior deltoid, biceps, coracobrachialis), forearm (brachialis), and hand during the handling phase, as well as the extensors (triceps) and pronators (pronator teres) of the forearm during the finishing stage of the shot, are the primary muscle groups of the upper limb that intervene during the action of the shooting. Until the player does not bend, the lower limb muscles contract isometrically and work concentrically (knee flexors) during the bending step.

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To classify a new, single-celled organism as prokaryotic or eukaryotic, a biologist would need to examine the characteristics of the organism. The most effective procedure to classify the organism would be to observe the cell structure of the organism under a microscope.

If the organism lacks a true nucleus and other membrane-bound organelles, it is likely a prokaryote. Prokaryotic cells are generally smaller and simpler in structure than eukaryotic cells. They lack a true nucleus and other membrane-bound organelles, and their genetic material is typically found in a single circular chromosome.

If the organism possesses a true nucleus and other membrane-bound organelles, it is likely a eukaryote. Eukaryotic cells are generally larger and more complex in structure than prokaryotic cells. They have a true nucleus and other membrane-bound organelles such as mitochondria, chloroplasts (in photosynthetic organisms), and endoplasmic reticulum.

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Answer:

24 movable vertebrae:

7 cervical(neck)

12 thoracic(back of chest)

and 5 lumbar(loin)

Answer:

Photosynthesis converts Light and chemical energy in to food-energy molecule sugar and gives off Oxygen

Explanation:

6CO2 + 6H2O → C6H12O6 + 6O2

Photosynthesis is a chemical reaction that takes place inside a plant, producing food for the plant to survive.

Carbon dioxide, water and light are all needed for photosynthesis to take place.

Photosynthesis happens in the leaves of a plant.

(a) The magnitude of the electric field within the cell membrane is 7.1×10⁶ N/C.

(b) The magnitude of the electric force exerted on a potassium ion (K+) placed inside the membrane is 1.6×10⁻¹⁹ N.

(a) The magnitude of the electric field (E) within a capacitor can be determined using the formula E = σ/ε₀, where σ is the charge density and ε₀ is the permittivity of free space. Given a charge density of 7.1×10⁻⁶ C/m², and knowing that ε₀ = 8.85×10⁻¹² C²/Nm², we can calculate the electric field as follows:

E = (7.1×10⁻⁶ C/m²) / (8.85×10⁻¹² C²/Nm²) = 8.03×10⁵ N/C.

Therefore, the magnitude of the electric field within the cell membrane is 8.03×10⁵ N/C.

(b) The electric force (F) experienced by a charged particle inside the membrane can be calculated using the formula F = qE, where q is the charge of the particle and E is the electric field. For a potassium ion (K+) with a charge of +e, where e is the elementary charge (+1.6×10⁻¹⁹ C), and using the electric field calculated above (E = 8.03×10⁵ N/C), we can find the magnitude of the electric force:

F = (+1.6×10⁻¹⁹ C) × (8.03×10⁵ N/C) = 1.29×10⁻¹³ N.

Hence, the magnitude of the electric force exerted on a potassium ion (K+) placed inside the membrane is 1.29×10⁻¹³ N.

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Answer:

rapid growth, developed country

Answer: Explanation:

Sickle hemoglobin differs from normal hemoglobin by a single amino acid: valine replaces glutamate at position 6 on the surface of the beta chain. Therefore the red blood cell bends differently giving it a sickle shape

Answer:

Explanation:

Sickle cell disease is a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disease have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.

Signs and symptoms of sickle cell disease usually begin in early childhood. Characteristic features of this disorder include a low number of red blood cells (anemia), repeated infections, and periodic episodes of pain. The severity of symptoms varies from person to person. Some people have mild symptoms, while others are frequently hospitalized for more serious complications.

The signs and symptoms of sickle cell disease are caused by the sickling of red blood cells. When red blood cells sickle, they break down prematurely, which can lead to anemia. Anemia can cause shortness of breath, fatigue, and delayed growth and development in children. The rapid breakdown of red blood cells may also cause yellowing of the eyes and skin, which are signs of jaundice. Painful episodes can occur when sickled red blood cells, which are stiff and inflexible, get stuck in small blood vessels. These episodes deprive tissues and organs, such as the lungs, kidneys, spleen, and brain, of oxygen-rich blood and can lead to organ damage. A particularly serious complication of sickle cell disease is high blood pressure in the blood vessels that supply the lungs (pulmonary hypertension), which can lead to heart failure. Pulmonary hypertension occurs in about 10 percent of adults with sickle cell disease.

Answer:

uhh either natural and reproductive pretty sure it's reproductive

Bacteria that degrade oil at great depths in offshore waters have most likely evolved new pathways and enzyme by modifying existing ones.

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Answer:

The answer is b

Explanation:

The theoretical yield is 2 moles of sodium carbonate per mole of sodium bicarbonate used, and the actual yield was 2.5 moles per mole of sodium bicarbonate used. The percent yield is 100%.

Here are the theoretical yield and percent yield calculations for each of the three reactions:

Reaction 1: Sodium bicarbonate (s) + Sodium hydroxide (aq) → Sodium carbonate (aq) + Hydrogen carbonate (aq)

The theoretical yield of this reaction is 2 moles of sodium carbonate per mole of sodium bicarbonate used, assuming complete conversion of the reactants to products.

The actual yield of the reaction was 2.5 moles of sodium carbonate per mole of sodium bicarbonate used.

The percent yield of this reaction is [(actual yield / theoretical yield) x 100] * 100% = 100%.

Reaction 2: Sodium bicarbonate (s) + Sodium oxide (s) + Carbon dioxide (g) → Sodium carbonate (aq) + Bicarbonate ion (aq) + Water (l)

The theoretical yield of this reaction is 1 mole of sodium carbonate per mole of sodium bicarbonate used, assuming complete conversion of the reactants to products.

The actual yield of the reaction was 1.5 moles of sodium carbonate per mole of sodium bicarbonate used.

The percent yield of this reaction is [(actual yield / theoretical yield) x 100] * 100% = 83.3%.

Reaction 3: Sodium bicarbonate (aq) + Carbon dioxide (g) → Bicarbonate ion (aq) + Water (l)

The theoretical yield of this reaction is 2 moles of bicarbonate ion per mole of sodium bicarbonate used, assuming complete conversion of the reactants to products.

The actual yield of the reaction was 1.5 moles of bicarbonate ion per mole of sodium bicarbonate used.

Hence, The percent yield of this reaction is [(actual yield / theoretical yield) x 100] * 100% = 75%.

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Answer:

WORK

1 : activity in which one exerts strength or faculties to do or perform something: a : activity that a person engages in regularly to earn a livelihood people looking for work. b : a specific task, duty, function, or assignment often being a part or phase of some larger activity.

Power

2 : possession of control, authority, or influence over others. 2 : a nation that has influence among other nations a foreign power. 3 : the ability to act or produce an effect It's in your power to change things. 4 : the right to do something the president's powers. 5 : physical might : strength The wind grew in power .

Explanation:

Mark as brainliest plsssssssssssssssssssssssssss

Answer:

Work is the energy needed to apply a force to move an object a particular distance, where force is parallel to the displacement. Power is the rate at which that work is done.

Work is how much force it takes to move an object in the same direction as the force. Power is how long it takes you to do the work.

Explanation:

thank you for your question

The piece of evidence that suggests that the athlete is telling the truth about increasing their red blood cell content by natural means is option C) Vitamin B12 levels are normal.

Vitamin B12 is an essential nutrient that plays a crucial role in the production of red blood cells. It is necessary for the proper maturation of red blood cells in the bone marrow. A deficiency of vitamin B12 can lead to impaired red blood cell production, resulting in a condition called megaloblastic anemia. If the athlete's vitamin B12 levels are normal, it indicates that their body is receiving an adequate supply of this vitamin. This suggests that their red blood cell production is likely occurring naturally without the need for artificial means such as blood transfusions. Options A, B, and D are not strong pieces of evidence to support the athlete's claim:

A) Oxygen carrying capacity is increased: While increased red blood cell content can enhance the oxygen carrying capacity, it does not necessarily indicate the source of the increased red blood cells, whether natural or artificial. B) No appearance of blood in the stool: The absence of blood in the stool may suggest the absence of gastrointestinal bleeding, but it does not specifically indicate the source of increased red blood cell content. D) High levels of HIF1alpha are present: High levels of HIF1alpha, a transcription factor involved in the response to low oxygen levels, can be an indicator of hypoxia. However, it does not directly confirm the method by which red blood cell content was increased. Therefore, the normal levels of vitamin B12 provide stronger evidence to support the athlete's claim of increasing their red blood cell content through natural means.

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Answer:

they would die

Explanation:

they would propadly die because they need big, not too warm forests and that is not in Australia

An organism must maintain a tolerable internal environment including factors such as temperature and acidity in order to preserve a biological balance called homeostasis.

People are mammals, and mammals are warm-blooded creatures capable of maintaining a relatively constant internal temperature regardless of the temperature of their surroundings. Body temperature regulation is an example of homeostasis, which is an organism's self-regulating process that maintains internal stability while adjusting to conditions in ways that are optimal for survival.

The optimal temperature of the human body is 37 °C (98.6 °F), but various factors, such as exposure to environmental elements, hormones, an individual's metabolism, and disease, can cause excessively high or low body temperatures. The hypothalamus in the brain is primarily responsible for controlling body temperature.

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In order to maintain a biological balance known as homeostasis, an organism must maintain a tolerable internal environment that includes elements such as temperature and acidity.

People are mammals, and mammals are warm-blooded organisms that can maintain a generally constant internal temperature independent of their environment' temperature. Body temperature regulation is an example of homeostasis, which is a self-regulating process in which an organism maintains internal stability while adapting to conditions in ways that are best for life.

The ideal body temperature is 37 °C (98.6 °F), although exposure to external elements, hormones, an individual's metabolism, and sickness can all induce abnormally high or low body temperatures. The hypothalamus in the brain is in charge of managing body temperature.

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I am here to give the brainiest answer not to get points

Answer: yes

Explanation:

Invasive species cause harm to wildlife in many ways. When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. ... Invasive species can change the food web in an ecosystem by destroying or replacing native food sources.

The overall force in Newtons the ostrich egg would experience would be 19.6 Newtons.

What do you mean by Force?

Force is an influence that can change the motion of an object, cause an object to change shape, or produce motion or stress in a stationary object. It is basically a vector quantity, meaning it has both magnitude and direction. Examples of forces include gravity, friction, and electric and magnetic forces.

This can be calculated by using the equation mv = p, where m is the mass of the object (1.4 kg in this case), v is the acceleration (14 meters per second), and p is the overall force. Thus, p = 1.4 kg x 14 m/s = 19.6 N.

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Here is a summary of the short story "The Man to Send Rain Clouds" using the Somebody Wanted But So Then strategy:

Somebody: Teofilo, a respected elder in the Laguna Pueblo tribe, has died.

Wanted: His family and community want to honor him with a traditional funeral ceremony.

But: The priest, who is also a member of the community, refuses to participate in the ceremony because he believes it is pagan.

So: The family is forced to hold the funeral without the priest's blessing. They paint Teofilo's face with traditional symbols, offer him cornmeal and pollen, and pray for rain.

Then: The next day, it rains. The community is grateful to Teofilo for sending the rain, and they realize that they can still honor him even without the priest's blessing.

This story explores the conflict between traditional Pueblo beliefs and Christianity. It also shows how a community can come together to support each other during a time of loss.

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Answer:

1

Explanation:

Mostly because it was the BIGGEST thing that really happend during said event. The others happend yes but not as majorly as number 1.

Answer:

Competition

Explanation:

the owls and hawks eat the same food, so they compete over it and would both be impacted if something happened to the food.

Two key principles important for the evolution of large multicellular organisms are:

Cellular Differentiation:

Cell-to-Cell Communication:

These two principles, cellular differentiation and cell-to-cell communication, are interconnected and synergistic in the evolution and functioning of large multicellular organisms.

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Explanation: Compound: A substance that is made up of more than one type of atom bonded together. Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.

Answer:

The cell now undergoes a process called cytokinesis that divides the cytoplasm of the original cell into two daughter cells. Each daughter cell is haploid and has only one set of chromosomes, or half the total number of chromosomes of the original cell.

Explanation:

The phragmoplast, a structure made up of membranes, actin filaments, and microtubules, controls the deposition of the new wall.

Higher plant cells have a unique process for cytokinesis, in which the division of a new cell wall partitions the cytoplasm.

Inside the cell is the cell plate. The location of a preprophase band of microtubules and actin filaments determines where the cell plate is located.

After mitosis, a new cell wall must be created and inserted in plant cells during a process known as cytokinesis.

The cytoplasm of the parent cell is now divided into two daughter cells by a process known as cytokinesis in the cell.

Therefore, each daughter cell is haploid and has just one set of chromosomes, or half as many as the original cell.

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