Quizziz - Genetics Basics

What is an allele?

• A slippery, long animal that lives in the water

• a version of a trait

• a kind of cell that has DNA

• If I told you the answer, how are you ever going to learn?

Which of the following are PHENOTYPES?

• red hair

• Gg

• seven toes

• SS

• cc

Which of the following are GENOTYPES?

• crooked pinky finger

• Dd

• QQ

• Orange teeth

• ff

Tags

NGSS.HS-LS3-2

A genotype with two dominant alleles is known as:

• Homozygous dominant

• homozygous recessive

• heterozygous

A genotype with two different alleles is known as:

• homozygous dominant

• homozygous recessive

• heterozygous

In humans, the ability to "roll" your tongue is dominant (R) over not being able to roll your tongue (r). Which of the following genotypes would show a person who CAN roll their tongue?

• rr

• Rr

• RR

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Monsters with red skin have the dominant trait. Which of the following could be the genotype of this monster?

• rr

• red skin

• Rr

• RR

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The term used to describe a purebred organism when two identical alleles are present.

• heterozygous

• homozygous

• recessive

• dominant

In humans, the widow's peak allele is dominant and the no widow's peak allele is recessive. A person who is homozygous dominant would create gametes _________.

• W and w

• none of these answers

• W and W

• w and w

Tallness (T) is dominant to shortness (t) in pea plants. Which of the following represents a genotype of a pea plant that is heterozygous for tallness?

• Tt

• TT

• tt

• Ss