Review #1 for End of Genetics Unit Assessment

What is the probability of heterozygous offspring?

• 25%
• 50%
• 0%
• 100%

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?

• 25%
• 1%
• 10%
• 0%

What percentage of the offspring will have this recessive disease?

• 0%
• 25%
• 50%
• 75%

What percentage of the female offspring will be a carrier for this recessive disease?

• 0%
• 50%
• 100%
• 25%

I have 2 X chromosomes. What am I?

• Male
• Female

I have 1 X chromosome and 1 Y chromosome. What am I?

• Male
• Female

If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?

• sex-linked trait
• polygenic trait
• codominant trait
• incomplete dominance trait

Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?

• X^HX^h
• X^hX^h
• X^HX^H
• X^hY

Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?

• X^HX^h
• X^hX^h
• X^HY
• X^hY