Heredity and Punnett Squares

Front

What is heredity?

Back

Heredity is the passing of traits from parents to offspring through genes.

Front

What is a Punnett square?

Back

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

Front

What does it mean for a trait to be dominant?

Back

A dominant trait is one that is expressed in the phenotype even when only one copy of the allele is present.

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is one that is only expressed in the phenotype when two copies of the allele are present.

Front

How many alleles does a person carry for each trait?

Back

Each person carries two alleles for each trait, one inherited from each parent.

Front

What is the genotype for a homozygous dominant individual?

Back

The genotype for a homozygous dominant individual is represented by two uppercase letters (e.g., AA).

Front

What is the genotype for a homozygous recessive individual?

Back

The genotype for a homozygous recessive individual is represented by two lowercase letters (e.g., aa).

Front

What is the genotype for a heterozygous individual?

Back

The genotype for a heterozygous individual is represented by one uppercase and one lowercase letter (e.g., Aa).

Front

What is the probability of obtaining a recessive phenotype from a cross between two heterozygous parents?

Back

The probability is 25%.

Front

What does the letter 'T' represent in genetics?

Back

In genetics, 'T' typically represents a dominant allele.