Genetics Crosses

What is the phenotypic ratio for the monohybrid cross between blue and brown eyes?

• 3:1

• 2:2

• 0:2:1

• 1:2:1

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Based on the genotypes present in this Monohybrid Punnett square, which eye color is dominant?

• brown

• blue

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Based on the results in the monohybrid punnett square, what is the percent chance of having a child with blue eyes?

• 75%

• 50%

• 25%

• 0%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Based on the results in the monohybrid punnett square, what is the genotypic ratio?

• 1:2:1

• 0:2:2

• 0:0:4

• none

This image is an example of a ________ cross.

• Monohybrid

• Dihybrid

• Purebred

• Heterozygous

What are the possible genotypes for this cross?

• TT=25%, Tt=50%, tt=25%

• all tall

• TT=75%, tt=25%

• Tt=100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms?

• 0%

• 25%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The genotypes Tt, Mm, and Gg would be described as __________.

• heterozygous

• homozygous

Which of the following genotypes is homozygous dominant?

• Bb

• dd

• G

• RR

Which of the following genotypes would be considered homozygous recessive?

• RR

• Bb

• dd

• g