In peaches, fuzzy skin (F) is completely dominant to smooth (nectarine) skin (f)

ID: 101231 • Letter: I

Question

In peaches, fuzzy skin (F) is completely dominant to smooth (nectarine) skin (f). The heterozygous

condition of oval glands at the base of the leaves (G O ) and no glands (G N ) gives round glands. A

homozygous fuzzy, no gland peach variety is bred to a smooth, oval-gland variety.

PLEASE RESPOND TO ALL QUESTIONS:

A) What will be the appearance of the F1 peaches?

B) What will be the phenotypic ratios of the F2 peaches?

C) What will be the phenotypic ratios of the offspring of a cross of the F1 peaches back to that smooth,

oval-glanded parent?

Ans-a- as we know that fuzzy is dominant so the offspring in f1 will have fuzzy, no gland peach variety.

If round gland are dominant then peaches will appear fuzzy, round gland.

Ans-B-

FfOO

It will be 6:3:3:2:1:1

Ans-C-

They will be in 1:1:1:1

FG FO fG fO FG FFGG FFGO FfGG FfOG FO FFGO FFOO FfGO

FfOO

fG FfGG FfGO ffGG ffGO fO FfGO FfOO ffGO ffOO