What process in prophase 1 of meiosis makes every gamete different

Answers

Answer 1

crossing over

that is the process

Answer 2

Final answer:

In prophase I of meiosis, two processes occur that make every gamete different: crossover and random assortment of tetrads.

Explanation:

In prophase I of meiosis, two processes occur that make every gamete different.

Crossover: During prophase I, crossover events between the nonsister chromatids of each homologous pair of chromosomes generate recombinant chromatids with new combinations of genes from the mother and father.Random assortment: The random alignment of tetrads on the metaphase plate produces unique combinations of maternal and paternal chromosomes that will make their way into the gametes.

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Related Questions

What is the process in which immigrants are absorbed into the larger host society?

Answers

The process is called Cultural Assimilation

The pathophysiology class is learning how microorganisms develop resistance to anti-infective drugs. what is one way the nursing students would learn that microorganisms develop resistance to anti-infective drugs?

Answers

They may learn resistance through conjugation- where bacteria exchange DNA via sex pili (bridges).

People with dark brown eyes have greater amounts of the protein melanin in their irises than people with light blue eyes. The amount of melanin produced is a direct result of _________.
Select one:

Environmental conditions

Their personality

The foods they received as children

DNA

Answers

DNA??? I’m not sure but I’m saying DNA hope I helped!

Certain environments can lead to an increased risk of developing certain diseases.
true or false

Answers

Answer:

True

Explanation:

Certain environmental conditions increase the occurrence of diseases. A polluted environment in terms of air pollution poses risk of developing respiratory disease such as asthma in allergic individuals or in the individuals with hyperactive immune system. Likewise, individuals with defective melanin production gene are more likely to develop skin cancer upon exposure to UV lights. Hence, specific conditions stimulate disease occurrence.

Crenation (shrinking) is likely to occur in blood cells immersed in ________.
a.a hypotonic solution
b.blood plasma
c.a hypertonic solution

Answers

I believe that Crenation (shrinking) s likely to occur in blood cells when immersed in Hypertonic solution. The shrinking occurs because the red blood cells looses water osmotically to the outside environment and shrinks, then becomes crenated. We have three types of solution. An isotonic solution is a solution with equal solvent and solvent molecules. A hyperonic solution is a solution with more solute molecules than solvent molecules, for example a solution of with more salt molecules than water molecules. A hypotonic solution is a solution with more solvent molecules (water molecules) than solute molecules (salt).

Crenation (shrinking) is likely to occur in blood cells immersed in C) a hypertonic solution.

In a hypertonic solution, the concentration of solutes outside the blood cells is higher than inside the cells. As a result, water molecules tend to move out of the cells through osmosis, leading to a loss of water and the subsequent shrinkage of the cells.

This can occur when blood cells are exposed to a solution with a higher salt concentration or other solutes. Conversely, in a hypotonic solution where the concentration of solutes outside the cells is lower, water molecules will move into the cells, causing them to swell and potentially burst. In blood plasma, which is isotonic to blood cells, there is no net movement of water, and the cells maintain their normal shape and size.

Therefore, the correct answer is C) a hypertonic solution.

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what is the cell wall ?

Answers

The cell wall is a layer on the outside of the cell membrane of plant, fungi. and bacteria cells. It provides the cell with structural support and protecion.

I hope this helps you:)

Hello,

Here is your answer:

The proper answer to this question is "a cell wall is what lying outside the plasma membrane of the cells and its seen in plants".

Here is how:

The cell wall surrounds the whole cell like a wall protecting it from the out side cells that could cause the cell to die.

If you need anymore help feel free to ask me!

Hope this helps!

Compare the fate of pyruvate in alcohol fermentation and in lactic acid fermentation

Answers

I believe During alcoholic fermentation; Pyruvate is reduced to ethanol in two steps which include; Pyruvate loses carbon dioxide and is converted to the two carbon compound which is oxidized into acetaldehyde. NADH is oxidized to NAD+ and acetaldehyde is reduced to ethanol. Many bacteria and yeast carry out alcohol fermentation under anaerobic conditions.
On the other hand, During lactic Acid fermentation Pyruvate is reduced to lactate, coupled by the oxidation of NADH to NAD+. This reaction is used in the production of commercially important products such as cheese and yogurt. When oxygen is scarce human cells switch to lactic acid fermentation from aerobic fermentation. Lactate accumulates, but it is gradually taken to the liver where it is converted back to pyruvate when oxygen becomes available.

Answer:

Fate of pyruvate in alcohol fermentation:

Alcoholic fermentation may be defined as a type of metabolic pathway in which occurs generally in the yeast and microorganism. This process occurs in the absence of oxygen. The end products are ethanol, carbon dioxide and ATP from the pyruvate molecule.

Fate of pyruvate in lactic acid fermentation:

Lactic acid fermentation may be defined as the metabolic pathway that generally occurs in the muscle cells. This process occurs in the limited supply of oxygen. The end products are lactic acids and ATP from the pyruvate molecule.

Help please asap be very thankful

Answers

It is probably the type of environment they live in

What do you think algae offer that the fungi can’t do?

Answers

Both help the planet but algae can do it way faster.

Algae are autotroph as they contain chloroplasts and carry out photosynthesis. During photosynthesis they make carbohydrate. Hence, they are producers. Whereas, Fungi do not have chloroplast. They are saprophytes, depends on death and decaying matter for food. So, fungi are the decomposers of the ecosystem.

Which of the following would describe Lamarck’s ideas about evolution? Horses and zebras are similar. They have a common ancestor.

A mouse loses its tail in a fight. Its offspring will not have tails.

Wolves eat most of the rabbits in a field. A few smart rabbits find hiding places. They survive and reproduce.

Answers

The second statement: 'A mouse loses its tail in a fight. Its offspring will not have tails' best describes Lamarck’s ideas on evolution. Lamarck believed that traits developed during an individuals lifetime would be passed on to the individuals offspring. This is on contrast to Darwin's theory of Natural Selection: Individuals with a competitive edge within a population are more likely to survive and reproduce, thereby passing their genes explaining that particular phenotype to the next generation.

Answer:

A mouse loses its tail in a fight. Its offspring will not have tails.

Which of the following statements characterizes an excitatory neuron?

It sends an impulse back to the cell body of a neuron.
It helps carry an impulse to the next neuron.
It stops the passage of an impulse at a neuron.

Answers

It sends an impulse back to the cell body of a neuron

Final answer:

An excitatory neuron facilitates the transfer of an impulse to the next neuron by releasing neurotransmitters at synapses, which then activate the subsequent neuron, enabling transmission of the neural signal.

Explanation:

Characteristics of an excitatory neuron include its ability to facilitate the movement of an impulse to the next neuron. This is achieved by the release of neurotransmitters at the synapse, which carry the nerve impulse from one neuron to another. Within a neuron, the dendrites receive incoming signals and transfer the impulse to the soma (cell body). The axon hillock then integrates these signals and if the threshold of excitation is met, an action potential is generated. The axon carries this action potential away from the cell body towards other cells, ultimately reaching specialized endings called axon terminals where neurotransmitters are released. These neurotransmitters then bind to receptors on the dendrites of the next neuron, opening ion channels, allowing for the continuation of the impulse.

The patient is scheduled to have an eeg to confirm the presence of a sleep disorder. the patient asks the nurse to describe stage iv nrem sleep. what is the best response by the nurse?

Answers

The best response by the nurse is, this is the deepest stage of sleep and without it, you will be tired and depressed. In addition, an electroencephalogram or as called as (EEG) is a noninvasive test that registers electrical configurations in the brain. The examination is used to diagnose circumstances such as confiscations, epilepsy, head damages, faintness, headaches, brain tumors and sleeping disorders. It can also be used to settle brain bereavement.

A patient with heart failure reports awakening intermittently with shortness of breath. which terms appropriately describes this clinical manifestation?

Answers

I think the term that describes this Paroxsymal nocturnal. Paroxysmal nocturnal dyspnea refers to attacks of severe shortness of breath and coughing that generally occur at night. It usually awakens the person from sleep, and may be quite frightening. It is an acquired disorder that leads to the premature death and impaired production of blood cells. The disorder affects red blood cells, which carry oxygen; white blood cells, which protect the body from infection; and platelets.

Which describes the cells of a wilted plant? The central vacuoles contain little water, The plasmodesmata are closed, The chloroplasts contain little water, The walls have lost their shape

Answers

The answer is A: 'The central vacuoles contain little water'. Wilting occurs due to a plant losing more water than it can absorb through its roots from the ground. Wilting results in a loss of turgor pressure to almost zero.Typically, wilting occurs during very low soil moisture conditions. However, wilting can also occur under extreme cold conditions and in very saline soil.

The central vacuoles contain little water

You are working in the emergency department of a regional hospital in rural kentucky. a patient is brought in by emergency medical technicians (emt's). their initial report is suspected meningitis because the patient has a headache and stiff neck. the emts add that the patient's meningitis symptoms appear rather mild – he still has neck movement, and the headaches are not severe. the patient's overall condition is poor, however. he is very thin, has dark spots on his face and upper body, and open bloody-looking eruptions on his lips. his fever is 104 0 f, and his blood pressure is low. he also has severe diarrhea. 1. what is the first step in determining if the patient has meningitis? 2. this test reveals the presence of very large cells that appear to be eukaryotic, surrounded by a large capsule. what is the probable diagnosis? name some other eukaryotic organisms that can cause meningitis symptoms. 3. what groups of people are at risk for this infection? 4. how is

Answers

1. Meningitis is an infection of meninges, the membrane that protects the brain. To prove there is an infection in the brain, you can take a specimen of cerebrospinal fluid by lumbar puncture. The sample can be examined microscopically (for the presence of bacteria and leukocyte) or chemically(by looking at the protein count).

2. Cerebrospinal fluid should be sterile so the presence of eukaryotic cells means that the patient is meninges infected by bacteria. The diagnosis probably is meningitis bacteria. The capsule indicates the bacteria is Neisseria meningitidis, make the diagnosis become meningococcal meningitis.
Meningitis could also caused by Listeria monocytogenes, Haemophilus influenza, Streptococcus pneumoniae, or a virus.

3. The site of infection of meningitis could be from blood or direct contact to the cerebrospinal fluid.
Direct contact needs an open wound from the skull or the vertebrae that allow the invasion. Any accident that has enough force to fracture the skull be at risk.
Bacteria can spread from blood in case of sepsis. Immunocompromised patient has a higher risk. Children, incomplete vaccination and living in high-density community also increase the risk.

Which are characteristics of medusae?

Answers

Snake hair face of women body of a creature

According to the dichotomous key, in what way(s) is the house sparrow similar to the cobra?

Answers

D) Both are bot a mammal, are multicellular, and are heterotrophic.

One ozone molecule contains three _____ of oxygen.

Answers

One ozone molecule contains three atoms of oxygen.

Ozone (O3) is a triatomic molecule consisting of three oxygen atoms. Ozone is an allotropic oxygen modification that is much more unstable than the usual dual-atomic form, O2. O3 is generally present in the Earth's atmosphere: in layers of soil it is one of the most dangerous contaminants with harmful effects on the lungs; ozone in the upper layers of the atmosphere prevents the penetration of harmful ultraviolet rays to the Earth's surface.

Ozone consists of three oxygen atoms, for a total of 18 valence electrons. These can be equivalently distributed in two ways:

An athlete engages in some minor misbehavior. how should the coach respond to the athlete's misbehavior?

Answers

Public confrontation must be avoided as possible. The coach can remove the athlete from the practice or competition and misbehavior must be addressed privately. Athlete can have time to reflect on what did they do. This will allow realization on their mistake and the situation happened. With this, they will not loss their self esteem and confidence which is needed for their future games or during practice. Athletes are intelligent and they usually address if they have did a mistake.

________ is a compound stored in the muscles to replenish atp stores.

Answers

Creatine phosphate is a compound that is stored in the muscles to replenish atp stores.

In pea plants, yellow seeds (y) are dominant and green seeds (y) are recessive. a pea plant with yellow seeds is crossed with a pea plant with green seeds. the resulting offspring have about equal numbers of yellow and green seeded plants. what are the genotypes of the parents?

Answers

To get the result of having 50% of recessive phenotype (green seeds), it is necessary to have a homozygous recessive parent (yy) crossed with a heterozygous parent (Yy) in order to achieve the 50% Yy (yellow, dominant) and 50% (yy, green, recessive).

The Punnett square below illustrates the above result:
y y
Y Yy Yy
y yy yy

So we get 50% Yy(heterogous, yellow dominant) and 50% yy (homozygous recessive, green).

Final answer:

The parental genotypes for the pea plants are Yy for the yellow-seeded parent and yy for the green-seeded parent, which explains the equal numbers of yellow and green seeded offspring.

Explanation:

Understanding Parental Genotypes in Pea Plants

In pea plants, yellow seeds are dominant (Y) and green seeds are recessive (y). Given that a cross between a pea plant with yellow seeds and one with green seeds yields offspring with about an equal number of yellow and green seeds, we can deduce the genotypes of the parents. The parent with yellow seeds must be heterozygous (Yy) because they contribute both the dominant and recessive alleles. The green-seeded parent is homozygous recessive (yy) because green is the recessive trait and can only be expressed phenotypically when two recessive alleles are present.

To predict the genotypes and phenotypes of the offspring, a Punnett square analysis can be employed. In this scenario, the Punnett square would show 50% of the offspring having yellow seeds (Yy) and 50% with green seeds (yy), supporting the observation of equal numbers of yellow and green seeded plants among the offspring.

The genetic coding or expression that determines our dna and messaging for cells is

Answers

The correct answer is "available in all cells but is idle in some cells and active in others".

All cells in the human body have genetic information stored in the nucleus in the form of chromatin. In cells that are not actively dividing such as in neurons, skeletal muscle cells, etc., the genetic information is idle and formed as heterochromatin. In cells that are actively dividing such as in epithelium of the digestive tract, the genetic information is active and formed as euchromatin.

In a dialysis machine, wastes are removed from blood plasma by the process of

Answers

The answer is diffusion. Since the patient’s blood is high is waste products such as urea, the waste products diffuse into the dialyzing solution used in the dialysis machine. To remove excess water and sodium ions from the blood, however, the dialysis machine utilizes ultrafiltration process. This is achieved by lowering the hydrostatic pressure of the dialyzing solution against that of the patient's blood plasma.

I think it is by the process of diffusion. Blood contains particles of many different size and types, including cells, proteins, dissolved ions, and organic waste products. Some of these particles, such as proteins like hemoglobin, are essential for the body. Others such as urea must be removed from the blood or they will accumulate and interfere with normal metabolic process. The dialysis machine does the work of cleaning the blood by replicating the work of the kidney.

The conjunction fallacy describes how people are more likely to think _____ than that _____. two events occur together; either individual event occurs separately individual events occur separately; four events occur together two events occur separately; four events occur together individual events occur separately; the two events occur together

Answers

The conjunction fallacy describes how people are more likely to think two events occur together than that either individual event occurs separately. Conjunction fallacy is a theory that assumes people are more willing to take risks so as to avoid losses than to achieve gains. It occurs when we assume specific conditions are more probable than a single one.

Which of the three types of viruses shown above would you expect to include glycoproteins?

Answers

The viruses labeled with I and II in the picture presented below have a viral envelope, an outer layer of the viral particle that contains various glycoproteins.
These structures on the envelope are key factors in virus-cell recognition and viral infection of the cell.

The correct answer is D: I and II only.
Viruses have protein capsids, which protect their genetic material. This capsid sometimes is covered by viral envelopes which have glycoproteins on their surface. Glycoproteins help in the process of binding to the host cell and infecting it. In this example, virus III has the structure of a bacteriophage and it does not seem to have glycoproteins. Bacteriophages use their tail fibers to attach to the bacterial host and inject their genetic material. On the contrary, viruses I and II have glycoproteins sticking out of their envelopes.

The complete set of genes that makes up a person's heredity is called
a. a genotype
b. deoxyribonucleic acid
c. an allele
d. a phenotype

Answers

Your answer would be A genotype. :)

Small secondary lymphoid organs, which cluster along lymphatic vessels, are termed ________.

Answers

Lymph nodes. They comprise the lymphatic system that connects to the blood circulatory system. They are significant in the immune system. At the lymph nodes, foreign bodies in the lymph, such as pathogens, are filtered and trapped in lymph nodes where they are later destroyed by lymphocytes.

All the different populations living in the same habitat or ecosystem make up __________.
biodiversity
ecosystem diversity
genetic diversity
species diversity

Answers

The answer is D. species diversity. This is because biodiversity, refers to all the many plants, animals, fungi, and microorganisms. It also includes the variety of ecosystems found on Earth. Ecosystem diversity, describes all of the habitats around the world. Genetic diversity, describes the variety of genetic traits we observe in a species. Species diversity describes all the different populations living in the same habitat or ecosystem. So, your answer is D. If your still unsure, I just took this quiz and got 100%. Hope this helps!

All the different populations living in the same habitat or ecosystem make up species diversity.

What do you mean by species diversity?

Species diversity is the number of different species that are represented in a given community. The effective number of species refers to the number of equally abundant species needed to obtain the same mean proportional species abundance as that observed in the dataset of interest.

Moreover, it is defined as the number of different species present in an ecosystem and relative abundance of each of those species.” Diversity is greatest when all the species present are equally abundant in the area.

Therefore, many factors affect small-scale species richness, including geographic (e.g. species pool, dispersal), biotic (e.g. competition, predation, facilitation) and abiotic (e.g. resource availability, environmental heterogeneity, disturbance frequency and intensity).

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Which type of environmental scientists is likely to study the effects of pesticides on pigs?

A. Ecologist
B. Oceanographer
C. Environmental veterinarian
D. Environmental physicians

Answers

Environmental veterinarian. Hope this helped

The answer would be C -- environmental veterinarian

Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) _____________ .

Answers

There are choices for this question namely:

A) tonsil
B) thymus
C) Peyer's patch
D) appendix

The correct answer is "tonsil". Tonsils are lymphoid tissue that is found in the oral mucosa. The tonsils are arranged in a ring-like fashion called the Waldeyer's ring. This ring comprises of two tubal tonsils, two palatine tonsils, one adenoid tonsil, and one lingual tonsils. In cases of infection involving the oral mucosa and the pharynx, the tonsils become inflamed as well and the condition is called acute tonsillopharyngitis.

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