BV Unit 6 Genetics

Front

What is a gene?

Back

A piece of DNA on a chromosome that codes for a trait.

Front

What is incomplete dominance?

Back

When traits are blended so neither trait is fully expressed, resulting in a mix of both traits.

Front

What does 'tt' represent in genetics?

Back

It represents a homozygous recessive genotype for a trait.

Front

What is the Principle of Dominance?

Back

In a pair of alleles, one may mask the expression of the other.

Front

What is the Law of Segregation?

Back

During the formation of gametes, the two alleles for a trait separate from each other.

Front

What is the Law of Independent Assortment?

Back

Genes for different traits are inherited independently of each other.

Front

What is a dominant allele?

Back

An allele that always shows its effect in the phenotype when present.

Front

What is a recessive allele?

Back

An allele that only shows its effect if the individual has two copies of it.

Front

What is codominance?

Back

A situation where both alleles in a heterozygote are fully expressed.

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross.