Chapter 3 Lessons 1-2

Question 1

Heredity

Answer 1

The passing of traits from parent to offspring.

Question 2

Trait

Answer 2

A specific character trait that is passed from parent to offspring through its genes.

Question 3

Genetics

Answer 3

The scientific study of heredity.

Question 4

Fertilization

Answer 4

The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell.

Question 5

Purebred

Answer 5

Offspring of many generations that has the same trait.

Question 6

Gene

Answer 6

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

Question 7

Allele

Answer 7

Different forms of a gene.

Question 8

Dominant allele

Answer 8

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

Question 9

Recessive allele

Answer 9

Is hidden when the dominant allele is present.

Question 10

Hybrid

Answer 10

Offspring of crossing that allele have 2 different traits.

Question 11

Probability

Answer 11

A number that describes how likely it is that a particular event will occur.

Question 12

Punnet square

Answer 12

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

Question 13

Phenotype

Answer 13

Organisms appearance or visible traits.

Question 14

Genotype

Answer 14

Genetic make up or allele combination.

Question 15

Homozygous

Answer 15

Having two identical alleles for a specific gene.

Question 16

Heterozygous

Answer 16

Having two different alleles for a particular gene.