Lecture 2 review

Question 1

What is a dihybrid cross?

Answer 1

A cross between 2 true-breeding parents that have alternative characteristics for two different traits; examines 2 traits simultaneously

Question 2

What is an example of a dihybrid cross?

Answer 2

RRYY x rryy

Question 3

What is mendel’s second law?

Answer 3

The principle of independent assortment

Question 4

What does the principle of independent assortment state?

Answer 4

That different genes and their alleles are inherited independently; the first law, but applied to nonallelic genes

Question 5

What is the product/ multiplication rule?

Answer 5

The probability of the simultaneous occurrence of two or more independent events is the product of the occurrence of each of these traits individually?

Question 6

What is the sum/ addition rule?

Answer 6

If 2 events are mutually exclusive, then the probability of either event occurring is the sum of their individual probabilities