Punnett Squares and Pedigrees

Front

What does a half shaded in circle or square represent on a pedigree?

Back

Someone who carries a gene for the trait.

Front

What does a fully colored in circle or square on a pedigree represent?

Back

Someone who has the trait.

Front

What is a Pedigree Chart?

Back

A diagram that shows how a trait is passed through multiple generations of a family.

Front

Can two right-handed people have a left-handed baby?

Back

Yes, if they both pass on a recessive left-handed gene.

Front

What is a Punnett Square?

Back

A tool used to predict the genetic outcome of a cross between two organisms.

Front

What does it mean if a trait is dominant?

Back

It means that the trait will be expressed even if only one dominant allele is present.

Front

What does it mean if a trait is recessive?

Back

It means that the trait will only be expressed if two recessive alleles are present.

Front

What is the purpose of a genetic chart?

Back

To visually represent the inheritance patterns of traits in a family.

Front

What is an allele?

Back

An allele is a variant form of a gene.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.