Science Vocab Ch4

Question 1

Trait

Answer 1

a characteristic that is inherited

Question 2

Heredity

Answer 2

the passing of traits from parents to offspring

Question 3

Genotype

Answer 3

the set of genes that makeup an organism

Question 4

Phenotype

Answer 4

the observable characteristics of organism’s genotype

Question 5

Allele

Answer 5

a different from a single gene that controls an inherited characteristic

Question 6

dominant allele

Answer 6

the allele that hides the effects of another allele

Question 7

Recessive allele

Answer 7

the allele whose effect is hidden when paired with a dominant
allele.

Question 8

Purebred

Answer 8

an organism with identical alleles for a particular trait

Question 9

Hybrid

Answer 9

an organism that has two different alleles for a particular trait

Question 10

Punnett square

Answer 10

a diagram used to show all the possible combinations of a genetic
cross.

Question 11

Homozygous

Answer 11

having the presence of the same two alleles for the same gene

Question 12

Heterozygous-

Answer 12

having the presence of two different alleles for the same gene

Question 13

Pedigree

Answer 13

a record that shows a pattern of genetic inheritance in a family

Question 14

Codominance

Answer 14

the condition in which both alleles of a gene are actively expressed
and neither is dominant nor recessive

Question 15

Incomplete dominance

Answer 15

the condition in which both alleles are partially expressed
in a blended appearance of the trait.