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adell [148]
3 years ago
14

What percentage of genetic material is the same in everyone?

Biology
1 answer:
nika2105 [10]3 years ago
8 0
The answer is 99.9 percent.
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The barley plant has seven pairs of chromosomes. For a gamete, the number of genetic combinations that are possible through inde
skad [1K]

Answer:

1. 128

2. 16,384

Explanation:

Imagine there were two pairs of chromosomes:

A paired with B

C paired with D

A gamete could have the following combinations:

A + C

A + D

B + C

B + D

Therefore, with two pairs of chromosomes, there are 4 (2²) possibilities

With seven pairs of chromosomes, there are  (2⁷) possibilities. 2⁷  = 128

For a zygote produced by two barley parents, there are two gametes fused. So we must multiply the number of combinations for each gamete. Therefore, number of possible genetic combinations is 128 x 128 = 16,384

4 0
3 years ago
Which of the following is NOT a characteristic of a cinder come?
AlladinOne [14]

D. Made of ash and pieces of rock rich in silica.

Should be your answer!

4 0
3 years ago
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Explain why facilitated diffusion may need to occur and in what direction the particles diffuse in. Identify the molecules that
Goryan [66]

Answer:

Sometimes molecules cannot move through the cell membrane on their own. These molecules need special transport proteins to help them move across the membrane. Facilitated diffusion is the diffusion of substances with the help of transport proteins in the plasma membrane. These special proteins are called channel proteins or carrier proteins, and they are attached to the cell membrane. In fact, they go through the cell membrane, from the inside of the cell to the outside. Facilitated diffusion is used for molecules that cannot diffuse rapidly through cell membranes on their own, even when the molecules are moving from high to low concentration areas. An example is the sugar plants and animals use for energy, called glucose. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient so it does not require the use of cellular energy.

6 0
2 years ago
Help me with the last ones pleaseee:(
LiRa [457]

Answer: Y goes to proteins.

Explanation:

Enzymes, which are a form of protein, are used by the cell to accelerate chemical reactions.

3 0
3 years ago
Soil that is so rich in organic matter it can be burned is called what?
svetlana [45]
The answer for this is B
8 0
3 years ago
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