Question

In foxes, there are 2 genes that we wish to study. For coat color, platinum fur is dominant to wild-type fur color. For tails, one stripe at the tip of the tail is dominant to solid tail. Perform a cross between a truebreeding wild-type coat color and solid tail fox and a truebreeding platinum coat color, one stripe tail fox. Then take one male and one female of the F1 generation and cross them together. Give the genotype, phenotype, and their ratios of the F2 generation of foxes.

Answer 1

Answer:

From the given data in foxes and their 2 genes, let us assume the following:

1. Platinum fur coat is dominant : PP
2. wild type fur coat is recessive : pp
3. One stripe tail is dominant: SS
4. solid tail is recessive : ss

Parent : PPSS X ppss

Gametes : PS ps

F1 generation genotype : PpSs

F1 generation phenotype : Platinum fur coat , One stripe tail.

F2 generation of foxes:

	PS	pS	Ps	ps
PS	PPSS	PpSS	PPSs	PpSs
	Platinum fur coat , One stripe tail.	Platinum fur coat , One stripe tail.	Platinum fur coat , One stripe tail.	Platinum fur coat , One stripe tail.
pS	PpSS	ppSS	PpSs	ppSs
	Platinum fur coat , One stripe tail.	wild type fur coat, One stripe tail	Platinum fur coat , One stripe tail.	wild type fur coat, One stripe tail
Ps	PPSs	PpSs	PPss	Ppss
	Platinum fur coat , One stripe tail.	Platinum fur coat , One stripe tail.	Platinum fur coat, solid tail	Platinum fur coat, solid tail
ps	PpSs	ppSs	Ppss	ppss
	Platinum fur coat , One stripe tail.	wild type fur coat, One stripe tail	Platinum fur coat, solid tail	wild type fur coat, solid tail

F2 Genotype	PPSS	PpSS	ppSS	PPSs	PpSs	ppSs	PPss	Ppss	ppss
F2 Genotypic ratio	1	2	1	2	4	2	1	2	1

F2 Phenotype	Platinum fur coat , One stripe tail	Platinum fur coat, solid tail	wild type fur coat, One stripe tail	wild type fur coat, solid tail
F2 Phenotypic ratio	9	3	3	1