Question

Gibbon ALCL D Monkey CLC A D Dog DL D A A Q 23. What is the p-distance between the Gibbon and Monkey sequences? (A) 0.2 (B) 0.4 (C) 0.6 (D) 0.8 Q 24. Which two species are the most different based on the data givern above? (A) Gibbon and Monkey (B) Monkey and Dog C) Gibbon and Dog (D) All species show the same level of difference among thenm. The graph given below shows the relationship of the number of proteins and p-distance (multiplied by 100) between amino acid sequences in humans and their counterparts in mouse, opossum, chicken, and zebrafish. Use this graph to answer the following question. 25. Which of the following statements is FALSE? (A) Hundreds of mouse proteins are identical to that of humans. (B) Very few proteins in chicken are identical to human proteins. (C) Zerbrafish proteins are the most different from humans. (D) All the proteins in all the species are at least 50% different from humans.

Answer 1

Ans 23:

P-distance can be found by dividing the number of sites at which two sequence differ, by the total number of sequences given.

Here,

Gibbon : A-L-C-L-D

Monkey: C-L-C-A-D

Here, the two sequences differ at 1st and 4th site.

Thus, p-distance=(2)/5

=0.4

Option B.

Ans24: B - gibbon and dog. (As they have minimum number of identical base at a position).