Genetics Vocabulary Review

A physical characteristic such as dimples, eye color, and hair color.

• gene

• chromosome

• trait

Different forms of the same gene (represented by upper case or lower case letters). Ex: Bb, bb, BB, Tt, etc.

• gene

• trait

• allele

The trait that always shows up if the dominant allele is present. It is represented by a capital letter (B).

• recessive trait

• dominant trait

The trait that only shows up if there are two recessive alleles present. It is represented by a lower case letter (b).

• recessive trait

• dominant trait

the genetic makeup or allele combination

• recessive trait

• genotype

• phenotype

an organism's physical characteristics or visible traits

• genotype

• phenotype

What does it mean to be purebred?

• to have ancestors that only bred with their ancestors

• to have ancestors that all belong to the same breed

• to have ancestors that all belong to difference breeds

Tags

CCSS.L.3.4D

CCSS.L.6.4C

CCSS.L.7.4C

CCSS.L.8.4C

CCSS.L.9-10.4C

Having the same alleles for a trait - also known as purebred.

• heterozygous

• homozygous

• hybrid

Having two different alleles for a trait - also known as hybrid.

• heterozygous

• homozygous

• purebred

An organism whose parents differ genetically. Having different alleles for a trait. Also heterozygous.

• homozygous

• hybrid

• purebred