Biology 9.4-9.5: Multiple Alleles and Sex-Linked Disorders

What is NOT a possible genotype for someone with type B blood?

• BB
• AB
• BO

What is the genotype of a person with type A blood, who had a father with type O blood?

• AB
• AO
• AA
• OO

What are the blood types of the possible children that a woman (type O) and man (type AB) can have?

• O and AB
• O and A
• O and B
• A and B

A woman has type B blood and her husband has type O blood.  What must be the woman's genotype, if they have a child with type O blood?

• BO
• BB
• OO
• type B

What determines gender in humans? 

• the X and Y chromosome
• chromosome 21
• codominance
• epistasis

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

• 0%
• 50%
• 100%
• 25%

The different forms of a gene are called

• traits

• pollinators

• alleles

• hybrids

How many alleles does someone have for a genotype?

• 1
• 2
• 3
• 4

What pattern of inheritance is shown in this image?

• Codominance
• Incomplete dominance
• Polygenic traits

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