Basic Patterns of Human Inheritance

Basic Patterns of Human Inheritance

Multiple Choice

A recessive trait is expressed when the individual is __________ for the trait.

• heterozygous

• homozygous recessive

Multiple Choice

An individual who is heterozygous for a recessive disorder is called a _________. They don't express the trait, but they can pass it to their offspring.

• carrier

• purebred

Multiple Choice

Term for a diagram that traces the inheritance of a particular trait through several generations

• punnett square

• phenotype

• pedigree

• carrier

Multiple Choice

A pedigree for a DOMINANT trait will show those who express the trait, those who are normal, and carriers of the trait.

• True

• False

Multiple Choice

Pedigrees can be used to examine both recessive and dominant genetic disorders.

• True

• False

Multiple Choice

If looking at recessive disorders; this symbol represents:

• a female who expresses the trait being studied

• A male who expresses the trait being studied

• A male who carries the trait being studied

• A female who carries the trait being studied

Multiple Choice

If looking at recessive disorders; this symbol represents:

• A female who expresses the trait being studied

• A normal female

• A normal male

• A male who is a carrier for a particular trait.

Multiple Choice

If looking at recessive disorders; this symbol represents:

• A normal female.

• A normal male

• A female carrier

• A female expressing the trait being studied

Multiple Choice

The number 2 individual in the II row (II-2) represents:

• A female carrier of the trait in the first generation

• A male carrier of the trait in the second generation

• A male who expresses the disorder in the second generation

• A normal male in the first generation

Multiple Choice

The number 1 individual in the II row (II-1) represents:

• A normal female

• A normal male

• A male carrier of the trait in the first generation

• A female carrier of the trait in the second generation

Multiple Choice

The roman numeral I represents:

• The first generation (the parents)

• The second generation (the siblings)

Multiple Choice

The mom (I-2) is a carrier.

• True

• False

Multiple Choice

All daughters (II-1 and II-4) are normal.

• True

• False

Multiple Choice

Can pedigrees be used to show which people have a chance of getting a certain trait and how traits are passed from one generation to the next?

• Yes

• No