Pedigree Practice

Front

How many alleles does a person carry for a trait?

Back

2

Front

On a pedigree, this symbol represents a not affected female.

Back

A circle that is not shaded.

Front

What is the genotype of the father if he is homozygous dominant?

Back

AA

Front

The trait this pedigree traces is recessive because it skips a generation. What is the most likely genotype for person III-3 if they are affected?

Back

gg

Front

How many females in the pedigree have the hemophilia trait if 2 are affected?

Back

2

Front

What does a shaded circle represent on a pedigree?

Back

An affected female.

Front

What does a shaded square represent on a pedigree?

Back

An affected male.

Front

What is a carrier in genetics?

Back

An individual who has one copy of a recessive allele and does not express the trait.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the observable traits.

Front

What does it mean if a trait skips a generation in a pedigree?

Back

It suggests that the trait is recessive and can be carried without being expressed.