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The Figure Shows the Ka /Ks Values for Two Regulatory

Question 46

Multiple Choice

The figure shows the Ka /Ks values for two regulatory genes in pairs of species in (A) North American tarweeds and (B) Hawaiian silverswords. The dashed lines are the mean Ka/Ks values. What do these data indicate about how these genes are evolving differently in these two groups of taxa? A
The figure shows the K<sub>a </sub>/K<sub>s</sub> values for two regulatory genes in pairs of species in (A) North American tarweeds and (B) Hawaiian silverswords. The dashed lines are the mean K<sub>a</sub>/K<sub>s</sub> values. What do these data indicate about how these genes are evolving differently in these two groups of taxa? A B A) They are evolving neutrally in the tarweeds and under purifying selection in the silverswords. B) There have been more mutations in this gene in the silverswords than the tarweeds. C) They have experienced purifying selection in the tarweeds and positive selection in the silverswords. D) They have undergone gene conversion in the tarweeds but not in the silverswords.

B
The figure shows the K<sub>a </sub>/K<sub>s</sub> values for two regulatory genes in pairs of species in (A) North American tarweeds and (B) Hawaiian silverswords. The dashed lines are the mean K<sub>a</sub>/K<sub>s</sub> values. What do these data indicate about how these genes are evolving differently in these two groups of taxa? A B A) They are evolving neutrally in the tarweeds and under purifying selection in the silverswords. B) There have been more mutations in this gene in the silverswords than the tarweeds. C) They have experienced purifying selection in the tarweeds and positive selection in the silverswords. D) They have undergone gene conversion in the tarweeds but not in the silverswords.


A) They are evolving neutrally in the tarweeds and under purifying selection in the silverswords.
B) There have been more mutations in this gene in the silverswords than the tarweeds.
C) They have experienced purifying selection in the tarweeds and positive selection in the silverswords.
D) They have undergone gene conversion in the tarweeds but not in the silverswords.

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