at what point during meiosis do homologous chromosomes pair up?

Answers

Answer 1

Answer:

Prophase 1

Explanation:

In prophase 1, homologous chromosomes pair up and exchange sections of DNA in a process called crossing over.

Answer 2
Explanation: Pairing of homologous chromosomes occur during prophase 1. This is also known as synapsis. During synapsis there is crossing over too.

Related Questions

which parts of the monomers involved in the dimer formation​

Answers

Answer:

A dimer (/ˈdaɪmər/) (di-, "two" + -mer, "parts") is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular. The term homodimer is used when the two molecules are identical (e.g. A–A) and heterodimer when they are not (e.g. A–B).

Explanation:

How did the new island in the Pacific Ocean near the Vava'u Islands form? See below
for a picture of the new islands and for the location on earth.

Answers

Answer:

They were created from the subduction of the western-moving Pacific plate under the Australia-India plate at the Tonga Trench. The Tongan Islands sit on the Australia-India plate just west of the Tonga Trench. These volcanoes are formed when materials in the descending Pacific plate heat and rise to the surface.

Explanation:

The new island in the Pacific Ocean near the Vava'u Islands forms as divergent plates allow magma to come to the surface at this location. The correct option is a.

What are Vava'u Islands?

Vava's island is a group of islands that contain one large island and 40 smaller islands. They are present in the Tonga region.

They were formed as a result of the subduction of the Australia-India plate beneath the western-moving Pacific plate at the Tonga Trench.

West of the Tonga Trench on the Australia-India plate is the Tongan Islands. When elements in the descending Pacific plate heat up and rise to the surface, volcanoes like this are created.

Therefore, the correct option is a. divergent plates allow magma to come to the surface at this location.

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Although the human colon may be one of the most diverse microbial communities on Earth, the majority of the bacteria are classified as __________.

Answers

Answer:

prokaryotic bacteria/cells are found to be the most common type of single organisms.

Although the human colon may be one of the most diverse microbial communities on Earth, the majority of the bacteria are classified as anaerobes.

What are anaerobic organisms?

Anaerobic organisms are life forms that generate ATP in hypoxia conditions (absence of oxygen).

ATP is the energy con of the cell to carry out different cellular metabolic functions.

Anaerobic bacteria form part of the intestinal microflora in humans.

In conclusion, although the human colon may be one of the most diverse microbial communities on Earth, the majority of the bacteria are classified as anaerobes.

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__________ encompasses any unwanted or nonconsensual sexual contact.

Answers

Answer:

sexual assault

Explanation:

Pocket gophers change the nitrogen cycle in prairies because they:

Answers

Sheeeeeeeeeeeeeeeeeeeeeeeeeeeeesh

What is the measure of dissolved solids in the water?

Answers

TDS, Total dissolved solids (TDS) is measured as a volume of water with the unit milligrams per liter

4) A change in the natural sequence of bases in DNA structure is called a

Answers

Answer:

Mutation

Explanation:

A mutation is a change in the sequence of genetic letters, called bases, within a molecule of DNA.

Homeostasis is an organism's ability to _______. a. obtain energy from food b. interact with its specific environment c. maintain a constant internal environment d. survive without water for long periods of time

Answers

Answer:

C. Maintain a constant internal environment

Explanation:

Homeostasis is keeping an internal environment stable.

how can the h. pylori bacteria survive in the human stomach?

Answers

Answer:

To survive in the harsh, acidic environment of the stomach, H. pylori secretes an enzyme called urease, which converts the chemical urea to ammonia. The production of ammonia around H. pylori neutralizes the acidity of the stomach, making it more hospitable for the bacterium

Explanation:

PLEASE HELP !!!!
What are their chances of having a child that has A+ blood?

Answers

Answer:

I think it must be 25%

Explanation:

Not sure how to explain

Answer:

3 in 8 people

Explanation:

If you have type A blood, your parents had one of the following possible combinations of blood types: AB and AB. AB and B. AB and A.

Name the following:
The cell that covers a large area and is broad and flat in shape.​

Answers

Answer:

skin is the answer please and brainlest pleaaasssseeee

How much atp is produced in cellular respiration.

Answers

Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

what is the difference between volume measurements and capacities

Answers

Volume measures the amount of air for one function while capacity is any two or more volumes.

What is both the thickest and longest nerve in the human body?

Answers

The sciatic nerve is the largest and longest nerve in the human body, originating at the base of the spine and running along the back of each leg into the foot. At its thickest point, it is about as wide as an adult thumb.

Use examples to explain how the geosphere interacts with two other of Earth's spheres. Explain the interaction for each using complete sentences. HELPPPP

Answers

Several examples of sphere interactions can be inferred from this photograph: Humans (biosphere) built a dam out of rock materials (geosphere). Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (geosphere), or evaporating into the air (atmosphere).

(PLEASE MARK ME AS BRINLIEST)

Answer: Dont have one just wanted to help this person get brainliest

Explanation: I like helping

are environmental factors more likely to affect genotype or phenotype?

Answers

Environmental factors are more likely to affect phenotype than genotype.

Phenotype refers to the observable physical characteristics of an organism, a product of the genetic information contained in the genotype, in accordance with the conditions of the determined environment in which the organism lives.

The phenotype supposes the manifestation of the genotype based on the environmental factors, the traits expressed by the phenotype are behavioral and physical.

Regardless of the genotypic information manifested, environmental factors will also shape the phenotype of an organism, since it can suffer accidents, changes or adaptations that a genetically similar individual but in another environment would not suffer.

Therefore, we can conclude that the phenotype is the variable expression of a genotype in accordance with the environmental factors.

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PLS HELP ME PLSSSSSSSS

Maddie’s favorite meal is breakfast, and she is careful to include healthy components along with her favorite foods. She knows breakfast helps to keep her energy levels up until lunch. Maddie's digestive system helps her body get energy from food. How do the nutrients from food get to the body's cells? A. The nutrients are distributed by the digestive system to the parts of the body that need them. B. The nutrients are picked up and transported around the body by blood from the circulatory system. C. The nutrients are absorbed directly into the cells that need them. D. The circulatory system brings nutrients to the digestive system to be processed for the cells.

Answers

Answer:c

Explanation:why i don’t know I just want the points

help 4-6 pls!!??!!!!!!!!!!!!!!!

Answers

Answer:

Hopefully this is correct!! Not sure...

Explanation:

4) D

5) A

6) C

D, A, C are the right answers, I think

ayuda por favor doy corona​

Answers

Answer:

Mr est un jeune individu provenant de

what is called renewable energy and nonrenewable energy​

Answers

Answer:

Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply.

Explanation:

Renewable resources include timber, wind, and solar while nonrenewable resources include coal and natural gas.

Answer:

The type of energy which can be used again and again is called renewable energy.

The energy which cannot be used again and again is called non renewable energy.

Which of the following statements is characteristic of proteins?

Answers

Answer:

c. Proteins are the building blocks of the body.

Explanation: is correct

C) proteins are the building blocks of the body

plzz help

Which describes a promoter?

a. the first part of an operon that regulates where, when, and to what level a gene is
expressed

b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene

c. a cluster of genes that are expressed or repressed as a group

d.an enzyme that helps DNA unzip prior to transcription

Answers

Answer: A

Explanation: email for more help my address is

charlescarey0906(at symbol)g ma il.com

no spaces or caps

Answer:

a :)

Explanation:

Can an objects mechanical energy be equal to its gravitational potential energy?

Answers

Answer:

Yes

Explanation:

Because if an object falls, it gives up its gravitational potential energy. The gravitational force does work on it, and speeds it up.

Answer:

yes

Explanation:

if an object does not have kinetic energy, meaning, it is not moving, its mechanical energy would be equal to its gravitational energy.


An innate behavior
a. can change.
b. must be learned from parents.
c. is always present from birth.
. does not depend on learning or experi-
ence.

Answers

Answer:

A

Explanation:

Because people will not always stay the same people can change when they're ready

Is the circled karyotype a male or female?


female


male

Answers

Answer: A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.

Explanation:

A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.


Explanation:

Inside an active mitochondrion, most electrons follow which pathway?.

Answers

Answer:

Citric Acid Cycle

Explanation:

Which statements accurately describe the pharmacokinetic parameters of oral conjugated equine estrogens (CEEs)

Answers

The parameters are near complete absorption, high protein binding, and high distribution, extensive metabolization of tamsulosin, and exit of the substance through the urine, as shown in options 1,3,4, and 5.

We can arrive at this answer because:

Oral conjugated equine estrogens are medications taken orally when prescribed by a qualified practitioner.These medications are made with a mixture of several types of estrogens that resemble each other in some way.They are widely used to treat osteoporosis and other common problems in women.

One of the main characteristics and advantages of this type of medicine is that its excesses are eliminated in the urine. In addition, they are easily absorbed by the body, are highly distributed, easily bind to proteins, and are easily metabolized.

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HELP NEEDED ASAP! 30 POINTS AND BRAINLYEST TO WHOEVER ANSWERS WITH THE BEST ANSWER! What are 3 examples of gene therapies that are used to treat diseases?

Answers

Answer:

Viruses used in gene therapy are retroviruses, adenoviruses, adeno-associated virus, herpes simplex, and vaccinia. Retroviruses are most commonly used because they can incorporate their genetic material into the host cell’s DNA, thus changing the genetic component of that cell.

Explanation:

Gene therapy is a medical field which focuses on the genetic modification of cells to produce a therapeutic effect or the treatment of disease by repairing or reconstructing defective genetic material. The first attempt at modifying human DNA was performed in 1980 by Martin Cline, but the first successful nuclear gene transfer in humans, approved by the National Institutes of Health, was performed in May 1989. The first therapeutic use of gene transfer as well as the first direct insertion of human DNA into the nuclear genome was performed by French Anderson in a trial starting in September 1990. It is thought to be able to cure many genetic disorders or treat them over time.

Gene augmentation therapy.

Gene inhibition therapy.

Killing of specific cells.

I think this is what you want but i'm only 14 and in 10th so sry if its not

why are carbon atoms important in organic molecules

Answers

The properties of carbon make it the backbone of the organic molecules which form living matter. Carbon is a such a versatile element because it can form four covalent bonds. ... Organic molecules important for life include relatively small monomers as well as large polymers.

what bones are formed by intramembranous ossification

Answers

Answer:

Intramembranous ossification is the process of bone development from fibrous membranes. It is involved in the formation of the flat bones of the skull, the mandible, and the clavicles.

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