When sex cells combine to produce offspring, each sex cell will contribute

An allele in which a trait always shows up when the allele is present is called

Chromosomes are made up of

What does the notation Bb mean to geneticists?

An organism's physical appearance is its

What is a mutation?

Why are sex-linked traits more common in males than in females?

A purebred chicken with white feathers is crossed with purebred chicken that has black feathers. Each of their offspring have both black and white feathers. Why does this happen?

Genetic disorders are caused by

A carrier is a person who has

An organism with two identical alleles for a trait is called a(n)

Which combination of sex chromosomes results in a male human being?

What is a pedigree?

Factors that control traits are called

The passing of physical characteristics from parents to offspring is known as

An organism's genotype is its

Many characteristics are affected by interactions between genes and

A mutation can be...

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