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Dennis_Churaev [7]
3 years ago
9

Help please biology work​

Biology
1 answer:
NeTakaya3 years ago
4 0

Answer:

C. Student 2

Explanation:

The community is the sum of all of the different populations in an area. All of the biotic(living) components of an ecosystem.

The only answer with more than one organisms is student 2's observation.

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The following are the recombination frequencies for a set of genes found on the same chromosome: X-W 7% W-Y 10% X-Z 13% W-Z 20%
Vladimir [108]

Options have not been provided for the question. They are as follows:

What is the correct order for these genes using a linkage map analysis?  

A. Z-X-Y-W

B. X-W-Z-Y

C. W-X-Y-Z

D. Y-W-Z-X

E. Z-X-W-Y

F. Y-X-W-Z

Between which two genes is crossing over most likely to occur?

A. B and D

B.X and Z

C. X and W

D. X and Y

E. W and Z

F. Y and W

G.Y and Z

Answer:

Correct order for these genes using a linkage map analysis: E. Z-X-W-Y

Two genes between which the crossover is most likely to occur: G.Y and Z

Explanation:

According to linkage concept, recombination frequency between two genes = distance between two genes in cM

Here, smallest distance is between X and W ( 7cM ) so they are present next to each other. Distance between X and Y is 17cM and between W and Y is 10cM so W is present between X and Y. Distance between X and Z is 13 cM. Since on one side of X, W and Y are already present Z lies on the other side. So, the final gene order comes out to be, Z-X-W-Y.

According to the gene order, Y and Z genes are farthest from each other. Chances of crossover or recombination increases with increasing distance between genes. So, Y and Z have the highest probability to show crossing over.

5 0
3 years ago
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