Biology · Genetics
A Drosophila male carrying an X-linked temperature-sensitive recessive mutation that is lethal at 29°C but viable at 18°C is mated to: Case A: a normal female Case B: a female containing attached X-chromosomes (XXY with normal alleles) If the eggs laid in both cases are reared at 29°C, what will be the male-to-female ratio in the surviving progeny?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A - 1 : 2, B - 1 : 1
- 2A - 1 : 1, B - only females
- 3A - 0 : 1, B - 1 : 0✓
- 4A - 1 : 0, B - 1 : 2
Correct answer
A - 0 : 1, B - 1 : 0
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