Question

If a gene in Drosophila is expressed only in imaginal disc (A) when it begins to differentiate, it is referred to as a homeotic gene. Recessive mutations in such genes often result in loss of function so that the structure does not develop. If a transgenic organism is made in which the gene is expressed in a different imaginal, disc (B), what is the predicted result?
a) loss of function of disc B's primary gene


b) deregulation of gene expression throughout disc B


c) gain of function of several inappropriate genes in disc A


d) deregulation of gene expression throughout disc A


e) gain of function in disc B of some of the structures usually seen in disc A

Answer 1

Answer: e) gain of function in disc B of some of the structures usually seen in disc A

Explanation:

it can be inferred that having a gene B and adding a gene A, it can develop forms of both patterns, since it is known that gene A does not interfere in the formation of B, which acts independently to generate its genetic characteristics Thus, the function of B will remain the same and genetic dysregulation will not occur.