Pedigrees Practice

Pedigrees Practice

Multiple Select

Assuming a trait is AUTOSOMAL DOMINANT, what genotypes could make a person AFFECTED?

• AA

• Aa

• aa

• X^AY

• X^aY

Multiple Choice

What type of inheritance is shown in the image?

• Autosomal Dominant

• Autosomal Recessive

• Sex Linked Dominant

• Sex Linked Recessive

• Y Linked

Multiple Choice

This pedigree shows the inheritance of colorblindness.

What is the genotype for individual IV-1?

• X^BX^B

• X^bX^b

• X^BY

• X^bY

Multiple Choice

What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?

• They are cousins
• The children
• Aunts and Uncles

Multiple Choice

What does a horizontal line between a square and a circle mean?

• They are siblings

• They are cousins

• They are married ("together")

• They are the children

Multiple Choice

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing

Multiple Choice

Imagine the shaded individuals are those WITH a "hitchhikers thumb." What must be the genotype of individual II-1?

• TT

• tt

• Tt

• Impossible to tell

Multiple Choice

How many kids did the mother and father from the first generation have?

• 2

• 4

• 5

• 6

Multiple Choice

Is it possible for individual IV-2 to be a carrier? Why?

• No, because her parents don't have the trait.

• No, because she doesn't have the trait.

• Yes, because her siblings have it.

• Yes, because her parents are carriers.

Multiple Choice

If hemophilia is a sex-linked recessive trait, what genotype would individual III-3 have?

• X^hX

• X^hX^h

• X^hY^h

• X^hY

Multiple Choice

Why does individual IV-7 have colorblindness?

• Because his mom is a carrier.

• Because his dad has it.

• Because his siblings have it.

• Because his uncle has it.

Multiple Choice

Why do all the daughters in Generation II carry the colorblind gene?

• Because mom passed on the gene.

• Because dad passed on the X chromosome.

• Because their brother has it.

• Because their brother gave it to them.

Multiple Choice

In the second generation-how many people are carriers of the trait?

• 2

• 3

• 5

• 6