Punnett squares

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the genetic makeup of offspring from two parents based on their genotypes.

Front

What does genotype mean?

Back

Genotype refers to the genetic constitution of an individual, represented by letters (e.g., AA, Aa, aa).

Tags

NGSS.HS-LS3-1

Front

What does phenotype mean?

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a phenotype that is a blend of both.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

If a plant has the genotype RR, what is its phenotype?

Back

The phenotype is red flowers.

Tags

NGSS.HS-LS3-1

Front

If a plant has the genotype WW, what is its phenotype?

Back

The phenotype is white flowers.

Tags

NGSS.HS-LS3-1

Front

What is the expected phenotype ratio from a cross of Aa x Aa?

Back

The expected phenotype ratio is 3:1 (3 dominant: 1 recessive).

Front

What is the expected genotype ratio from a cross of Aa x Aa?

Back

The expected genotype ratio is 1:2:1 (1 AA: 2 Aa: 1 aa).

Front

What is the purpose of a Punnett square?

Back

The purpose of a Punnett square is to visualize and calculate the probability of different genotypes and phenotypes in offspring.

Tags

NGSS.HS-LS3-3

Front

What allele combination represents a homozygous dominant genotype?

Back

AA represents a homozygous dominant genotype.