Genetics Review

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following represents the genotype of a pea plant that is heterozygous?

• RR

• round

• Rr

• wrinkled

• rr

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following represents the genotype of a pea plant that is homozygous dominant?

• RR

• round

• Rr

• wrinkled

• rr

In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, the offspring in box 4 would:

• be white.

• be heterozygous.

• be gray.

• be homozygous.

In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, how many offspring would be black?

• 0

• 1

• 2

• 3

• 4

In humans, having freckles (F) is dominant to not having freckles (f).

Two people with freckles get married and give birth to three children. Two of the kids have freckles and one does not.

Both parents must have which genotype?

• FF

• Ff

• ff

If black fur is dominant and white fur is recessive, what genotype would an organism with white fur have?

• FF

• Ff

• ff

The passing down of physical characteristics or traits from parents to offspring through sexual reproduction.

• Heredity

• Genetics

• DNA

• Genes

• Nucleotides

The branch of biology that deals with heredity and differences in organisms determined by DNA.

• Heredity

• Genetics

• DNA

• Genes

• Nucleotides

Sections of DNA that serve as the recipe for a specific trait. Usually represented as stripes or bands on chromosomes.

• Heredity

• Genetics

• DNA

• Genes

• Nucleotides

What do we call the specific characteristics of an organism such as hair color, eye color, height, weight, etc?

• Traits

• Attributes

• Features

• Qualities

• Virtues