Ch. 6.3 Dihybrid Cross

Question 1

What is Mendel’s first law and what is it about?

Answer 1

Segregation: 2 alleles of a trait separate from each other during the
formation of gametes, half of the gametes carry one copy and
half carry the other copy
This occurs as diploid germ cells form haploid gametes

Question 2

What is Mendel’s second law and what is it about?

Answer 2

Independent assortment: Segregation into gametes from homologous chromosomes is random
There are 2 billion combination of gamets from chromosomes in human, which is 46 chromosomes

Question 3

What are the possible gametes for RrYy?

Answer 3

RY, Ry, rY, ry

Question 4

What are the possible gametes for RrYy x RrYy?

Answer 4

There are 16 gametes(RRYY, RRYy….etc) using punnett squares