What would you expect to see in the F2 generation of our fast plants if you cros
ID: 35719 • Letter: W
Question
What would you expect to see in the F2 generation of our fast plants if you crossed the F1 with the second parent (P2) that is homozygous recessive for both characters? Assume independent assortment (the two genes of interest are unlinked). Be sure to include: a) the genotypes of both F1 and P2 plants (designate purple stem as "P", green stem as "p", green leaf as "G", and yellow leaf as "g")b) the genotypes of the offspring (in a Punnett square), and expected fractions of each
c) the expected phenotypic ratios
What would you expect to see in the F2 generation of our fast plants if you crossed the F1 with the second parent (P2) that is homozygous recessive for both characters? Assume independent assortment (the two genes of interest are unlinked). Be sure to include: a) the genotypes of both F1 and P2 plants (designate purple stem as "P", green stem as "p", green leaf as "G", and yellow leaf as "g")
b) the genotypes of the offspring (in a Punnett square), and expected fractions of each
c) the expected phenotypic ratios
What would you expect to see in the F2 generation of our fast plants if you crossed the F1 with the second parent (P2) that is homozygous recessive for both characters? Assume independent assortment (the two genes of interest are unlinked). Be sure to include: a) the genotypes of both F1 and P2 plants (designate purple stem as "P", green stem as "p", green leaf as "G", and yellow leaf as "g")
b) the genotypes of the offspring (in a Punnett square), and expected fractions of each
c) the expected phenotypic ratios
Explanation / Answer
(a) P2 is homozygous recessive, so genotype will be ppgg.
F1 will be heterozygous, PpGg.
F2 cross will be PpGg X ppgg
(b) Result :- 1 (PpGg):1 (Ppgg):1 (ppGg):1 (ppgg) (This becomes a test cross).
(b) 1(purple stem, green leaf): 1 (purple stem, yellow leaf ):1 (green stem, green leaf ):1 (green stem, yellow leaf)
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