(NEED ASAP!) how does crossing over during meiosis allow for genetic variablity?

Answers

Answer 1
Homologous chromosomes pair, then the chromosomes cross over in certain points. Then the Chromosomes break up and then pair again which results in different genes since they traded. Which is the result of genetic variability.

Related Questions

what is a example of a formation at a divergent boundary​

Answers

Answer: C - Ridge

Hope this helps :)

Light Reactions : ATP :: Calvin Cycle :
a. G3P
b. H2O
c. O2
d. H+

Answers

Answer:

a. G3P

Explanation:

Photosynthesis is the process by which plants synthesize their food from inorganic sources in the presence of light. The photosynthetic process occurs in two stages namely: light dependent stage (light reaction) and light independent stage (Calvin cycle).

The light stage primarily functions to synthesize ATP and NADPH products needed in the Calvin cycle to synthesize sugar (glucose). However, the CALVIN CYCLE produces a three-carbon compound called GLYCERALDEHYDE-3-PHOSPHATE (G-3-P) as one of the precursors of glucose.

A 3-column table with 2 rows titled Table 2 Diffusion Tests. Column 1 has entries Color of Solution in Dialysis Tube, Color of Solution in Beaker. Column 2 is labeled Step 4: Test for Diffusion Starch with entries Clear initial color and Black after 15 minutes, Yellow initial color and Yellow after 15 minutes. Column 3 is labeled step 7: Test for Diffusion of Glucose with entries Not observed, Light Blue initial color and Red after 15 minutes.
Analysis:
diffused though the semipermeable membrane.

Answers

Answer:

only glucose

Explanation:

The second student set up solutions that were in equilibrium.

On which principle Dialysis is based?

Dialysis is based on the principles of osmosis, meaning the net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration. If the solute concentrations are the same on each side of the membrane, this spontaneous movement will not occur.

In passive diffusion, the small water molecules can move across the phospholipid bilayer seen in blue. This layer acts as a semi-permeable or selectively permeable membrane; its hydrophilic heads are attracted to water (seen facing outwards) while its water-repellent hydrophobic tails face towards each other- allowing  molecules of water to diffuse across the membrane along the concentration gradient.

Therefore, the second student set up solutions that were in equilibrium.

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i think its bacteria but im not sureee (the fox diagram thing)

Answers

Explanation: your right it is bacteria , could i pls get a brainlesttttt

How can I identify an organelle? Please help I have till 11:59 to answer this question.

Answers

Answer:

Shape and size?

Explanation:

Why do we shiver when we’re cold?

Answers

Answer:

A shiver is caused by your muscles tightening and relaxing in rapid succession. This involuntary muscle movement is your body's natural response to getting colder and trying to warm up.

You shiver when your cold because your body kinda since's when your cold and you start shivering to make your body warm-up.

Hope This Helps! Have A GREAT Day!!!

Intermolecular forces hold biomolecules together. They are also found between biomolecules. Which of these is a place you would expect to find hydrogen bond in a biomolecule?
a) between amino acids in a protein
b) between adenine and thymine in DNA
c) between the ribose and phosphate in RNA
d) between glucose and fructose in a sucrose molecule
(USA Test Prep)

Answers

Answer: B.

Explanation:

Answer:

B) Between adenine and thymine in DNA

Explanation:

A hydrogen bond would be found between adenine and thymine in DNA.

Peptide bonds- found in proteins

Covalent bonds - found in the backbone of nucleic acids

Glycosidic links - found in carbohydrates such as sucrose

Therefore, the only answer left, after you cross out the other from the information above, is B: Between adenine and thymine in DNA

How did the mutation change the hemoglobin protein?



ASAP

Answers

Answer: A  mutation Changes by its mistake in the DNA which results in the wrong amino acid being incorporated into a protein because of change, that single DNA sequence change, results in a different amino acid codon which the ribosome recognizes.

Explanation:

A mutation changes the instructions of a gene, which can also change the protein. Sometimes this change makes it so the protein can't do its job as well. And this is what happens with sickle cell anemia. A mutation in the hemoglobin gene changes the hemoglobin protein in a way that causes sickle cell anemia.

we should not touch and test acid. Give reason why?

Answers

Answer:

because the toxic of it can burn your skin the toxic of acid is very dangerous so we couldn't touch it if we touch it our skin or your skin will burn or turn it into ashes

Help Plz
Which of these does NOT describe Gary Paulsen? (5 points)
a
adventure writer
b
master storyteller
c
olympic champion
d
Iditarod participant

Answers

Answer:

c

Explanation:

C because he has never even participated in the olympics


How does a mechanical wave affect the matter in which it travels through?
A
It changes its position forever
B
It moves perpendicular to the direction of the wave.
C
It has not affect on it
D
It may displace it temporarily, however when the wave passes the matter returns back
to its original position.

Answers

Answer:

The best and most correct answer among the choices provided by your question is the fourth choice or letter D "The thin membrane that closes the cavity of the middle ear from the outside changes position."

Your ears pop in airplanes because the air high above the surface of Earth is less dense than air near the surface, because air near the surface has all the air above it pushing down. Your inner ear has air trapped in it and as the atmospheric pressure changes, it causes pressure on your eardrum.

I hope my answer has come to your help. Thank you for posting your question here in Brainly.

Explanation:

Read the statement.

In a food chain, algae carry out photosynthesis, which produces their food. Some small fish feed on the algae. Seabirds then feed on those small fish.

Which statement correctly describes this food chain?
Select one:

The seabirds are the producers.

The fish are the primary consumers.

The seabirds are the primary consumers.

The fish are the producers.
help!

Answers

Answer:

option B ,is correct answer of this question

Answer:

B

Explanation:

3. How far does a secondary wave travel in 10 minutes?

Answers

Answer:

Explanation:

1 to 8 km/sec- use this to work out 10 minutes

Answer:

Hi There!

Explanation:

1 to 8 km/sec

S-waves are transverse waves. Even though they are slower than P-waves, the S-waves move quickly. Typical S-wave propagation speeds are on the order of 1 to 8 km/sec. The lower value corresponds to the wave speed in loose, unconsolidated sediment, the higher value is near the base of Earth's mantle.

The segment of____
that codes for a____
is called a____.

Answers

Answer:

DNA

particular protein

polypeptide

Where were the metal cylinders located when they had the MOST
gravitational potential energy?
Just above the short plastic tube
O Just above the long plastic tube
O At the bottom of the long plastic tube
O At the bottom of the short plastic tube

Answers

Answer:

The answer is third example

At the bottom of the short plastic tube metal cylinders located when they had the Most gravitational potential energy.

What is Gravitational potential energy?

The energy that an object has due to its location in a gravitational field is known as gravitational potential energy.

When an object is close to the surface of the Earth, when the gravitational acceleration can be assumed to remain constant at roughly 9.8 m/s2, gravitational potential energy is most frequently used.

The potential energy at a height h above that point is equal to the effort that would be needed to raise the object to that height with no net change in kinetic energy because the zero of gravitational potential energy can be chosen at any location.

Therefore, At the bottom of the short plastic tube metal cylinders located when they had the Most gravitational potential energy.

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please help me there is 8 question please

Answers

Answer:

1. B mass/distance

2. B Gravitational attraction between the sun and Venus

3. A All objects would fly off into space

4. B Axis

5. A Rotation

6. A Increases

7. B Decreases

8. When there is no force acting on an object, it won’t change it’s path and will keep going straight until another force acts upon it.

Explain how genetic variation and environmental factors contribute to natural selection

Answers

Explanation:

Increasing genetic variation and the environmental effects on that variation form the basis for natural selection. A species with a great deal of genetic variability is more likely to survive as a species in a changing environment than a species with limited variability.

What are some Characteristics of a frog after metamorphosis

Answers

Answer:

its leg are developed-------------------------------

Which of the following animals belongs in class Cepholopoda?
1. snails
2. octopuses
3. glass sponges
4. jellyfish

Answers

Answer:

2. octopuses

Explanation:

A cephalopod is any member of the molluscan class Cephalopoda such as a squid, octopus, cuttlefish, or nautilus.

Octopuses belongs in class Cepholopoda. So, the correct option is (B).

What is Cephalopod?

A cephalopod is defined as any member of the molluscan class Cephalopoda such as a squid, octopus, cuttlefish, or nautilus where specifically marine animals with bilateral body symmetry, a prominent head, and arms modified from primitive molluscs or is characterized by a set of tangents foot. These animals use gills to breathe and are invertebrates (lack backbones).

Cephalopods are most notable for their many arms and soft bodies, while ancestral cephalopods are known mostly from their shells because they are well preserved as fossils. The octopus, squid, cuttlefish, and chambered nautilus are familiar representatives.

Thus, Octopuses belongs in class Cepholopoda. So, the correct option is (B).

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A mutation in which cell would only affect the organism and not future generations

A. Sperm cell and lung cell
B. Sperm cell and egg cell
C. Nerve cell and brain cell
D. Egg cell and liver cell

Answers

C will be the answer

Answer: B. sperm cell and egg cell

Explanation:

Does grass convert water to energy

Answers

Answer:

No

Explanation:

The answer is no hope this helped

an individual with this karyotype would be described as

Answers

Answer:

it's option c

Answer:

a normal male with a translocation mutation.

QUICK ASAP PLS Certain bacteria live and grow on the roots of some plants and produce chemicals that are beneficial to the plants. Which of the following observations best supports the claim that this relationship is beneficial to the plants?



Group of answer choices

Plants with a higher amount of the bacteria on their roots have increased rates of survival and reproduction.

When the bacteria are removed from the plant roots and are grown in a laboratory setting, they fail to survive.

The population size of the bacteria varies greatly depending on the chemistry of the soil and the type of the plant.

The chemical produced by the bacteria can be created by humans and added to the soil where it reaches the roots of the plant.

Answers

Answer:

Explanation: Plants with a higher amount of the bacteria on their roots have increased rates of survival and reproduction.

A male and female Oompah have the same genotypes: blue face (ff) and big feet (Ll). Determine what they’re offspring may look like!

Answers

Answer:

They Will have Blue Face and Large feet

Explanation:

for the blue face you will get 100% Blue face

for the large feet you will 75% Large feet and 25% small feet

white blood cells with long lobed nuclues are called....?

Answers

Answer:

polymorphonuclear leukocytes

Large moving cells in the blood and lymph nodes that ingest and digest foreign particles or wall off material are called:

bacteria
fibroblasts
viruses
leukocytes

Answers

Answer:

Leukocytes

Explanation:

Leukocytes = White blood cells that digest foreign particles

Identify three ways in which water is stored.

Answers

Really hope this helps have a great day now, okay?

True or False:
Newton's 3rd Law states, "all forces come in pairs that are equal in magnitude and opposite
in direction."

Answers

“His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.”
the answer is true.

NA in the nucleus carries the genetic code for making proteins in ribosomes. The diagram shows a model of DNA. Which part of the DNA molecule codes for the amino acid sequence in the protein?

Answers

Explanation:

i think the fatty acid because amino acids are also the fatty acids

Which of the following is not directly involved in protein synthesis?
tRNA
mRNA
Ribosomes
Mitochondria

Answers

The right answer is Mitochondria.
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