Genetics

Front

What are traits?

Back

Traits are physical characteristics that are studied in genetics.

Front

What is a mutation?

Back

A mutation is any change in a gene or chromosome.

Front

Why do offspring have both white and brown hair when a purebred white horse is crossed with a purebred brown horse?

Back

The alleles for fur color are neither dominant nor recessive.

Front

What do scientists call an organism with two different alleles for a trait?

Back

A hybrid.

Front

What are genes?

Back

Genes are factors that control traits.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in determining traits.

Front

What is a purebred organism?

Back

A purebred organism has two identical alleles for a trait.

Front

What is the role of alleles in genetics?

Back

Alleles are different forms of a gene that determine specific traits.

Front

What is phenotype?

Back

Phenotype is the observable physical or biochemical characteristics of an organism.

Front

What is genotype?

Back

Genotype is the genetic makeup of an organism, consisting of the alleles it possesses.