chapter 2

Question 1

True (pure) breeding organisms contain _______ genotypes

Answer 1

homozygous

Question 2

The parental (P) generation is the __ gen
The first filial (F1) generation is the __ gen
The second filial (F2) generation is the __ gen

Answer 2

1
2
3

Question 3

What would the replicate cross of Aa x Aa be

Answer 3

Aa x Aa
it just means repeat the cross

Question 4

What is a reciprocal cross?

Answer 4

use same phenotype but switch the sexes

Question 5

What would be the result of test crossing AaBb

Answer 5

1 A_B_
1 A_bb
1 aaB_
1aabb

Question 6

What is a test cross?

Answer 6

cross with homozygous recessive and see phenotypes

Question 7

What is the genotype and phenotype ratio for a monohybrid cross?

Answer 7

Geno: 1:2:1
pheno: 3:1

Question 8

What is the genotype and phenotype ratio for a dihybrid cross?

Answer 8

Pheno: 9:3:3:1

Question 9

The term ______ describes the individual in a pedigree whose phenotype was first brought to the attention of a medical researcher

Answer 9

proband

Question 10

The double horizontal lines in a pedigree for parents (closely related by blood) is _________

Answer 10

consanguineous marriage