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KiRa [710]
3 years ago
15

How have cactuses adapted to the fact that it almost never rains in the desert?

Biology
1 answer:
lilavasa [31]3 years ago
8 0
B) they have thick, pleated stems
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Suppose there are two homologous chromosomes. Each chromosome contains a single mutant allele in different parts of the chromoso
Harlamova29_29 [7]

Answer:

Cross overs can lead to formation of chromosome pairs that have no mutant allele.

Explanation:

Cross overs can lead to formation of chromosome pairs that have no mutant allele.

For example -

Suppose "X" is a mutant  allele and "x" is a mutant free allele.

Now when two homologous chromosomes contains a single mutant allele in different parts of the chromosome are crossed the following offspring are produced

X x

X XX Xx

x Xx xx

"xx" is a mutant free genotype.

Thus, crossing over can create a single mutation-free chromosome

8 0
2 years ago
Which beverage is the best example of a colloid?
nikdorinn [45]

Answer:

c . milk

Explanation:

Colloid are those whose particles are larger than the size of molecule.The size of particle is one nano meter.Collide particle range is between 1 to 1,000 nano meter. Every collide particle is consist of two parts colloidal particle and dispersion medium.

Milk is one of them.Collide are made form solid liquid and gas.

milk is the example of liquid collide.

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3 years ago
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Answer:

Positive selection involves targeting the desired cell population with an antibody specific to a cell surface marker (CD4, CD8, etc.). ... Negative selection is when several cell types are removed, leaving the cell type of interest untouched.

7 0
2 years ago
How many times more ATP can be formed by an electron transport chain than can be formed by a citric acid cycle?
Alexeev081 [22]
It should be 32 ATPs, since the electron transport chain produces 34(38) ATPs, and the citric acid cycle produces only 2 ATPs. 34-2=32
4 0
3 years ago
Read 2 more answers
Draw chromosomes and label the centromere and chromatids
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If the chromosome is an X shape the two rods that make it up are chromatids and the center that holds them together is the centromere 

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3 years ago
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