Unit 7: Complex Inheritance

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Which of the following genotypes representsType O blood?

A.) IAIA B.) IAi

C.) IAIB D.) ii

L

D.) correct answer

F

A.) autosomes B.) multiple alleles

C.) sex chromosomes D.) trisomy

L F

C.) correct answer

The 23rd pair of chromosomes that differ

in males and females are called _____.

A.) XX B.) XY

C.) XO D.) XXY

L F

B.) correct answer

Which of the following genotypes represents

a normal human male?

A.) multiple allelic B.) codominant

C.) simple dominant D.) polygenic

L F

Roan cattle have both red and white hairs. This variation demonstrates _____

inheritance.

B.) correct answer

A.) codominant B.) sex-linked

C.) polygenic D.) environmental

L F

Hemophilia is a genetic condition in which the blood does not clot properly. Because it is

carried on the X-chromosome, it is considered _____.

B.) correct answer

A.) incomplete dominance B.) multiple alleles

C.) simple dominance D.) codominance

L F

Hair texture in humans may be straight, wavy, or curly. Because wavy is a mixture of straight

and curly, this variation demonstrates _____.

A.) correct answer

A.) the offspring’s mother B.) an unknown genotype

C.) the offspring’s age D.) a parent’s phenotype

L F

A test cross is used to determine _____.

B.) correct answer

A.) sickle-shaped B.) too many

C.) normal D.) both A & C

L F

Individuals heterozygous for Sickle Cell Anemia have _____ red blood cells.

D.) correct answer

A.) lung cancer B.) hemophilia

C.) cystic fibrosis D.) sickle cell anemia

L F

Which of the following conditions is most likely environmental?

A.) correct answer

A.) 100% B.) 50%

C.) 25% D.) 0%

L F

What is the probability of a female fruit fly with white eyes and a male

fruit fly with red eyes having red-eyed male offspring?

D.) correct answer

A.) father B.) mother

C.) both parents D.) neither parent

L F

Color blindness is a sex-linked trait in humans. A colorblind male received

the disorder from which of his parents?

B.) correct answer

A.) Type A blood B.) Type B blood

C.) Type O blood D.) Type AB blood

L F

It is not possible for a woman heterozygous for Type A blood and a man homozygous for Type B blood to have a baby with which blood type?

C.) correct answer

A.) 0% B.) 25%

C.) 50% D.) 100%

L F

What is the chance that a man and a woman that are both carriers for Sickle-

Cell Anemia will have a baby that has the disease?

B.) correct answer

A.) codominant B.) simple dominant

C.) multiple allelic D.) polygenic

L F

There are numerous skin and eye colors in humans. These traits are

controlled by _____ inheritance.

D.) correct answer

A.) karyotyping B.) crossing over

C.) nondisjunction D.) UV exposure

L F

Down Syndrome, which is caused by trisomy at the 21st chromosome pair, is

caused by _____.

C.) correct answer

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