Ch 2 vocabulary

Question 1

phenotype

Answer 1

observable characteristic

Question 2

allele

Answer 2

alternate forms of a gene

Question 3

independent assortment

Answer 3

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

Question 4

gametes

Answer 4

reproductive cells containing one copy of each gene.

Question 5

gene

Answer 5

the heritable entity that determines a characteristic.

Question 6

segregation

Answer 6

the separation of two alleles of a gene into different gametes.

Question 7

heterozygote

Answer 7

an individual with two different alleles of a gene.

Question 8

dominant

Answer 8

the allele that is expressed in the phenotype of the heterozygote

Question 9

F1

Answer 9

offspring of the P generation

Question 10

testcross

Answer 10

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

Question 11

genotype

Answer 11

the alleles an individual has.

Question 12

recessive

Answer 12

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

Question 13

dihybrid cross

Answer 13

across between individuals both heterozygous for two genes.

Question 14

homozygote

Answer 14

having two identical alleles of a given gene