in a certain breed of plants, dark green is determined by the dominant allele G and...
Homework Answers
GG*gg gives the f1 Gg
Gg*Gg will gives f2 generation as follows
| Gametes | G | g |
| G | GG(dark green) | Gg(dark green) |
| g | Gg(dark green) | gg(light green) |
According to the table ratio of homozygous dominant(GG), hetrozygous(Gg) and homozygous recessive(gg) is 1:2:1
In a population of 400 F2 plants the number will be
homozygous dominant(GG)= 100 plants (dark green)
hetrozygous(Gg) = 200 plants
In hetrozygous condition penetrance is 75%. Penetrance is the proportion of individuals that show phenotype associated with the genotype. This means that only 75% of hetrozygous(=150) will show dark green phenotype while remaining 50 will show light green phenotype.
homozygous recessive(gg)= 100 plants (light green)
Total Number of light green plants= 100+50=150
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