What is the phenotype of the F1 generation?

1) Mendel did experiments where he kept track of seed color
(yellow or green). First, he created true breeding lines: parents
with green seeds produced offspring with green seeds, and parents
with yellow seeds produced offspring with yellow seeds. When he
crossed yellow with green peas from these true-breeding lines (F0 generation), all
of the offspring were yellow.

a) For the peas what is the gene? And what are the alleles?

b) How many plants in the F1 generation are green?

c) What is the phenotype of the F1 generation?

d) When he crossed members of the F1 generation what was the phenotypic ratio?

e) If he crossed plants 2000 times from the F1 generation to get 2000 offspring, then how many would be green?

f) What is the phenotypic ratio of the F2 generation?

g) What would be the genotypic ratio had he backcrossed members of the F1 generation with individuals from the true green breeding line (F0 green)?

h) If he did this backcrossing 800 times and got 800 offspring approximately how many of the plants would be genotypically heterozygous and phenotypically green?

2. Would you want the right to choose the sex, health, and abilities of your offspring (imagine you are about to have children)? Comment on the idea of Genetic Counseling. If you don’t know what it is, go ahead and look it up.

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