Genetics Review Flashcardizz

Front

What is incomplete dominance in genetics?

Back

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

Front

What is the definition of homozygous?

Back

Homozygous refers to having two identical alleles for a particular gene, such as RR or rr.

Front

What is the definition of heterozygous?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Rr.

Front

What is a genotype?

Back

A genotype is the exact genetic makeup of an organism, represented by alleles (e.g., RR, Rr, rr).

Front

What is a phenotype?

Back

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

Front

What is the genotypic ratio?

Back

The genotypic ratio is the ratio of different genotypes produced in a genetic cross.

Front

What is the phenotypic ratio?

Back

The phenotypic ratio is the ratio of different phenotypes produced in a genetic cross.

Front

What is the significance of the 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 is the definition of a trait?

Back

A trait is a specific characteristic of an organism, which can be influenced by genetics and the environment.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles are expressed in the phenotype even when only one copy is present, while recessive alleles are only expressed when two copies are present.