Heredity and Punnett Squares

Front

What is heredity?

Back

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

Front

Define genotype.

Back

Genotype refers to the genetic makeup of an organism, represented by the alleles it possesses.

Front

Define phenotype.

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or rr).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

Front

What is a dominant trait?

Back

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

Front

What is a recessive trait?

Back

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

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

If G = green and g = yellow, what is the phenotype of a plant with genotype Gg?

Back

The phenotype of a plant with genotype Gg is green, as green is the dominant trait.

Front

What is the genotype for a homozygous dominant individual?

Back

The genotype for a homozygous dominant individual is represented as AA.