Genetics Unit Review

Front

What is Codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What is Incomplete Dominance?

Back

A genetic scenario where the phenotype of heterozygotes is intermediate between the phenotypes of the two homozygotes.

Front

What is the probability of having green offspring from a cross between Yy and yy plants?

Back

50%.

Front

What is a recessive allele?

Back

An allele that is hidden unless paired with another allele of the same type.

Front

What are alleles?

Back

Different forms of a gene that can exist at a specific locus.

Front

What is a gene?

Back

A sequence of DNA that codes for a protein and determines a trait.

Front

What is a dominant allele?

Back

An allele that expresses its phenotype even when only one copy is present.

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., YY, Yy, yy).

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 from the parents.