Punnett Square Vocabulary

Front

Genotype

Back

Genetic makeup of an organism, represented by letters (e.g., BB, Bb, bb).

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

Phenotype

Back

Physical appearance of an organism, how it looks (e.g., black, brown).

Tags

NGSS.HS-LS3-1

Front

Dominant

Back

A trait that covers up another trait, represented by a capital letter (e.g., B).

Front

Homozygous Recessive

Back

Genetic condition where both alleles are the same and recessive (e.g., bb).

Front

Recessive

Back

A trait that gets covered up, represented by a lowercase letter (e.g., b).

Front

Heterozygous

Back

Genetic condition where the alleles are different (e.g., Bb).

Tags

NGSS.HS-LS3-2

Front

Allele

Back

Different forms of a gene that determine a specific trait (e.g., B or b).

Tags

NGSS.HS-LS3-2

Front

Punnett Square

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Tags

NGSS.HS-LS4-3

Front

Hybrid

Back

An organism with two different alleles for a trait (e.g., Bb).

Front

Phenotypic Ratio

Back

The ratio of different phenotypes in the offspring of a genetic cross.

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3