chapter 14 mastering

Question 1

What is a testcross?

Answer 1

It is used to determine whether an individual expressing the dominant phenotype is homozygous dominant or heterozygous.

Question 2

What is Mendel’s law of segregation?

Answer 2

is based on gametes getting only one copy of each allele of each gene.

Question 3

In a diploid cell with the genotype RrYyPp, how many different haploid cell genotypes could be created by independent assortment?

Answer 3

8

2^3, because: Rr = 1 , Yy = 2, Pp= 3

Question 4

What is the genotype ratio of a homozygous recessive x heterozygous?

Answer 4

1:1

Question 5

What is typically the purpose of drawing a forked-line diagram in genetics?

Answer 5

to determine what kinds of gametes an individual can produce.