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In the late 1940s Edward Lewis discovered mutations in the Antennapedia gene that lead to legs developing on the head of a fly instead of antenna. These mutations are dominant and lead to ectopic expression of the Antennapedia gene.
-Based on these data, how would you expect the gene to be expressed in the mutant? (Select all that apply.)
A) in every segment
B) in a more anterior segment
C) in a more posterior segment
D) earlier
E) later

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In the late 1940s Edward Lewis discovered mutations in the Antennapedia gene that lead to legs developing on the head of a fly instead of antenna. These mutations are dominant and lead to ectopic expression of the Antennapedia gene.
-Based on these data, how would you expect the gene to be expressed in the mutant? (Select all that apply.)
A) in every segment
B) in a more anterior segment
C) in a more posterior segment
D) earlier
E) later

Quizplus · Accepted Answer

The mutations lead to ectopic expression of the Antennapedia gene, which means that the gene is expressed in a different location than it normally is. In this case, the gene is expressed in the head instead of the antenna. This suggests that the gene is expressed in a more anterior segment (the head) and earlier (before the antenna develops).

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