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The diagram below shows the association of phenotype and gene expression patterns in five different species. The top portion shows the phylogeny of the five species; below the phylogeny are the phenotypes of the five species; and at the bottom are the expression patterns for three different genes (genes 1, 2, and 3) at two different time points in development (early and late), and in two different locations in the embryo (top and bottom).
-Which of the following would most likely lead to species A looking like species B?
A) Loss of a repressor of gene 1
B) Loss of a repressor of gene 2
C) Loss of a repressor of gene 3
D) Gain of a repressor of gene 1
E) Gain of a repressor of gene 2

Question

Use the following to answer questions :
The diagram below shows the association of phenotype and gene expression patterns in five different species. The top portion shows the phylogeny of the five species; below the phylogeny are the phenotypes of the five species; and at the bottom are the expression patterns for three different genes (genes 1, 2, and 3) at two different time points in development (early and late), and in two different locations in the embryo (top and bottom). 
-Which of the following would most likely lead to species A looking like species B?
A) Loss of a repressor of gene 1 
B) Loss of a repressor of gene 2 
C) Loss of a repressor of gene 3 
D) Gain of a repressor of gene 1 
E) Gain of a repressor of gene 2

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The Answer of Use the following to answer questions :
The diagram below shows the association of phenotype and gene expression patterns in five different species. The top portion shows the phylogeny of the five species; below the phylogeny are the phenotypes of the five species; and at the bottom are the expression patterns for three different genes (genes 1, 2, and 3) at two different time points in development (early and late), and in two different locations in the embryo (top and bottom). 
-Which of the following would most likely lead to species A looking like species B?
A) Loss of a repressor of gene 1 
B) Loss of a repressor of gene 2 
C) Loss of a repressor of gene 3 
D) Gain of a repressor of gene 1 
E) Gain of a repressor of gene 2

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