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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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mikael mikael
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10 years ago
The abdominal segments of Drosophila have no appendages. Loss of function of bithorax genes results in appendages forming in these abdominal segments. Therefore,
A) bithorax mutations are necessarily recessive.
B) bithorax genes normally activate appendage-forming genes.
C) ultrabithorax usually acts to oppose bithorax genes.
D) bithorax normally activates a gene that negatively regulates appendages in the abdomen.
E) expression of bithorax wild-type genes suppresses all appendage formation.
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padrepadre
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10 years ago
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mikael Author
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10 years ago
Thanks so much. This is perfect.
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