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Drosophila mutation cross (What will the F1 generation look like? Cy+=normal win

ID: 68056 • Letter: D

Question

Drosophila mutation cross (What will the F1 generation look like?


Cy+=normal wings
Cy = curly wings
Pm+= red eyes
Pm = plum eyes
D+= normal wings
D = diachaete wings
Sb+= normal bristles
Sb = stubble (bristles)

Mutations:
1 Curly-Curly wings, homozygous lethal
2 Plum-purplish eyes, homozygous lethal
3 Dichaete -winds divergent, homozygouslethal
4 Stubble-bristles short and thick, homozygous lethal

Cross a Cinnabar brown: eye white virgin mutant female to a curly winged,plum eyed, dichaete wing,stubble bristled male. (P generation).
What will their offspring (the F1 generation) look like after the above is crossed?

Explanation / Answer

Female Xw/Xw, Male Cy/Y

F1: Xw/Cy, Xw/Y, Xw/Cy, Xw/Y

Female Xw/Xw, Male Pm/Y

F1: Xw/Pm, Xm/Y

Female Xw/Xw Male D/Y

F1: Xw/D, Xw/Y

Female Xw/Xw Male Sb/Y

F1: Xw/Sb. Xw/Y

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