Genetics Review

The genetic makeup, or the alleles that an individual inherits is called our __________________.

A gene is a section of a ____________________ that codes for a trait.

In Mendelian genetics, the _________________ allele is always expressed if it is present.

When you inherit two of the same allele, you are ____________________.

What is the name for the tool used to determine the possible genetic outcomes of the offspring of two parents?

• Karyotype

• Life table

• Punnett square

• Pedigree

If two individuals that are heterozygous for a trait have children, what is the probability that they have a child that is homozygous recessive?

• 0%

• 25%

• 50%

• 100%

What is the name of a diagram that shows how a trait is passed through generations?

• Karyotype

• Life table

• Punnett square

• Pedigree

In a pedigree, if there is a circle that is completely shaded in, what could we say about that individual?

• She is female and is affected with a trait

• She is female and a carrier of a trait

• He is male and is affected with a trait

• He is male and is unaffected with a trait

TRUE OR FALSE: If a trait is dominant, then every affected individual must have at least one affected parent.

• True

• False

TRUE OR FALSE: Men can be carriers of an X-linked recessive trait (such as pattern baldness or hemophilia).

• True

• False