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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
Use of double mutants has been invaluable in studying developmental pathways. In C. elegans, sex is determined by the ratio of sets of autosomes to X chromosomes. A diploid male has one X, and diploid hermaphrodites have two X's. The loss-of-function gene her-1 produces XO worms that are hermaphrodites, but XX worms are unaffected. Mutation of a second gene, tra, causes the XX to develop as male. Given this information, what would be the phenotype of a tra, her-1 double mutant?
A) a male nematode
B) a female nematode
C) a hermaphrodite
D) an intersex variant
E) lethality
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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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