Evoutionary Biology Question: How many nonsynonymous (N) and synonymous (S) fixe

Question

Evoutionary Biology Question:

How many nonsynonymous (N) and synonymous (S) fixed differences are there between species 1 and 2?

a) N = 2; S = 4

b) N = 2; S = 3

c) N = 3; S = 3

d)N = 3; S = 4

How many nonsynonymous (N) polymorphisms are in the combined data from both species?

a) 0

b) 3

c) 1

d) 2

The table shows aligned homologous sites in a protein-coding region of two different species and shows sequences from 4 different individuals per species. A total of 17 sites are shown and whether the site is non-synonymous or synonymous is marked with an N or S. respectively. Use this table to answer questions 1-5 How many nonsynonymous (N) and synonymous (S) fixed differences are there between species 1 and 2? a) N = 2; S = 4 b) N = 2; S = 3 c) N = 3; S = 3 d)N = 3; S = 4 How many nonsynonymous (N) polymorphisms are in the combined data from both species? a) 0 b) 3 c) 1 d) 2

Explanation / Answer

1. d

2. b

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