Genetics

Front

What does homozygous mean?

Back

Having two of the same genes for a trait (sometimes called purebred).

Front

What is the genotypic ratio of the offspring in a typical monohybrid cross?

Back

1:2:1

Front

What type of genotype is represented by Aa?

Back

Heterozygous

Front

What percent of the offspring would be tan when you cross BbxBb?

Back

25%

Front

What type of genotype is represented by AA?

Back

Homozygous

Front

What does heterozygous mean?

Back

Having two different genes for a trait.

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What is a genotype?

Back

The genetic constitution of an individual, often represented by letters (e.g., AA, Aa, bb).

Front

What is a Punnett square?

Back

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

Front

What is the difference between dominant and recessive alleles?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous genotype.