Question

in fruit flies, straight wings are dominant and curly wings are recessive. what will the generations look like? assume that mendels 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. done

Explanation:

1. P generation: True - breeding parents with opposite traits. So one has straight (dominant, say SS) and one has curly (recessive, ss) wings. So P generation has straight and curly wings.
2. F₁ generation: Cross SS and ss. Offspring get one S and one s, so genotype Ss. Since straight (S) is dominant, all F₁ have straight wings.
3. F₂ generation: Cross F₁ (Ss × Ss). Using Punnett square, genotypes are SS, Ss, Ss, ss. So phenotypes: 3 with straight (SS, Ss, Ss) and 1 with curly (ss). So F₂ has straight and curly wings.

Answer:

B. The P generation has straight wings and curly wings.
C. The \( F_1 \) generation has all straight wings.
G. The \( F_2 \) generation has straight wings and curly wings.