Monohybrid Review

An offspring will receive how many alleles from each parent to determine a specific trait?

• one

• two

• three

• four

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is a phenotype?

• BB

• Bb

• bb

• Blue eyes

Having two of the same genes for the trait (sometimes called purebred)

• protein

• homozygous

• heterozygous

• chromosome

One form of a gene is called ______.

• a DNA

• a phenotype

• a trait

• an allele

If green is dominant over purple then what is the genotype for this individual?

• purple

• green

• GG

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the correct phenotype for Dory?

• BB

• green

• bb

• blue

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, the tall allele is dominant to the short allele. What key would show this?

• Tall = T

  Short = S

• Tall = T

  Short = t

• Tall = t

  Short = t

• Tall = t

  Short = T

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Which of the following genotypes of homozygous dominant?

• Yy

• yY

• yy

• YY

What is the genotypic ratio of the offspring?

• 3:1

• 1:2:1

• 1:3

• 2:2

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3