Chapter 1 Terms

Question 1

observable characteristic

Answer 1

phenotype

Question 2

alternate forms of a gene

Answer 2

alleles

Question 3

alleles of one gene separate into gametes randomly with respect to alleles of other genes

Answer 3

independent assortment

Question 4

reproductive cells containing only one copy of each gene

Answer 4

gametes

Question 5

the heritable entity that determines a characteristic

Answer 5

gene

Question 6

the separation of the two alleles of a gene in different gametes

Answer 6

segregation

Question 7

an individual with two different alleles of a gene

Answer 7

heterozygote

Question 8

the allele expressed in the phenotype of the heterozygote

Answer 8

dominant

Question 9

offspring of the P generation

Answer 9

F1 generation

Question 10

the cross of an individual of ambiguous genotype with a homozygous recessive individual

Answer 10

testcross

Question 11

the alleles an individual has

Answer 11

genotype

Question 12

the allele that does not contribute to the phenotype of the heterozygote

Answer 12

recessive

Question 13

a cross between individuals both heterozygous for two genes

Answer 13

dihybrid cross

Question 14

having two identical alleles of a given gene

Answer 14

homozygote