Genotype and phenotype question help?

Question

If the gene A is one of the genes controlling leaf colour. A recessive mutant allele of that gene,
a, is occasionally present which turns the leaves white due to inability to synthesize chlorophyll.

 

1.in a cross between two homozygous parents (aa and aa), show all possible gametes for each of the parents.

2. What will the genotypes of f1 be?

3. What phenotypes will these f1 plants display?

4. Show all possible f1 gametes.

5. give the possible genotypes and phenotypes of f2.

6. What is the expected phenotype ratio in f2?

 

Answer 1

1. The gametes will be a
2. The genotypes of the f1 offsprings will be aa.
3. the phenotypes of the f1 offsprings will be white.
4. the possibe f1 gametes are a.
5. genotypes: aa and Aa and the phenotypes will be white and green respectively.
6. aa:Aa ratio is 3:1