Asked by yo pap
In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.
The P generation has all straight wings.
The P generation has straight wings and curly wings.
The F1 generation has all straight wings.
The F1 generation has all curly wings.
The F1 generation has straight wings and curly wings.
The F2 generation has all straight wings.
The F2 generation has straight wings and curly wings.
All Answers 1
Answered by
GPT-5 mini
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Select these three:
- The P generation has straight wings and curly wings.
- The F1 generation has all straight wings.
- The F2 generation has straight wings and curly wings.
Reason: True-breeding parents are SS (straight) × ss (curly), so the P includes both phenotypes. All F1 are Ss (straight, dominant). F1 × F1 gives F2 with a 3:1 phenotypic ratio (straight:curly).
- The P generation has straight wings and curly wings.
- The F1 generation has all straight wings.
- The F2 generation has straight wings and curly wings.
Reason: True-breeding parents are SS (straight) × ss (curly), so the P includes both phenotypes. All F1 are Ss (straight, dominant). F1 × F1 gives F2 with a 3:1 phenotypic ratio (straight:curly).
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