Vocabulary Heredity Test

Question 1

Genetics

Answer 1

The scientific study of heredity.

Question 2

Heredity

Answer 2

The passage of genetic instructions from one generation to the next generation.

Question 3

Gregory Mendel

Answer 3

Father of genetics

Question 4

Allele

Answer 4

The different forms of a gene.

Question 5

Gene

Answer 5

A sequence of DNA that determines a trait and is passed from parent to offspring.

Question 6

Traits

Answer 6

A specific characteristic that an organism can pass to its offspring through its genes.

Question 7

Dominant allele

Answer 7

An allele whose trait always shows up in the organism when the allele is present.

Question 8

Recessive allele

Answer 8

An allele that is hidden whenever the dominant allele is present.

Question 9

Phenotype

Answer 9

An organism’s physical appearance, or visible traits.

Question 10

Genotype

Answer 10

An organism’s genetic makeup, or allele combinations.

Question 11

Punnett Squares

Answer 11

A chart that shows all the possible combinations of alleles that can result from a genetic cross.

Question 12

Homozygous Dominant

Answer 12

Having two identical alleles for a particular gene. DD

Question 13

Heterozygous

Answer 13

Having two different alleles for a particular gene. Dd

Question 14

Homozygous recessive

Answer 14

Having two identical alleles for a particular gene. dd

Question 15

Purebred

Answer 15

An offspring of many generations that have the same form of a trait.

Question 16

Hybrid

Answer 16

An offspring of crosses that has two different alleles for a trait.

Question 17

Codominance

Answer 17

A situation in which both alleles for a gene are expressed equally.

Question 18

Incomplete dominance

Answer 18

A situation in which one allele is not completely dominant over another allele.