Mendelian Genetics and Punnet Squares

Which of the following is the homozygous recessive genotype?

• rr

• AA

• TT

• Ff

Tags

NGSS.HS-LS3-1

Which of the following is the homozygous dominant genotype?

• Jj

• Rr

• MM

• ee

Tags

NGSS.HS-LS3-1

The physical appearance of a trait is known as the:

• genotype

• phenotype

• Homozygous

• intelligence

Tags

NGSS.HS-LS3-3

Mary's genotype is heterozygous for head shape. If (R) is for Round head, and (r) is for Egg head, what is Mary's genotype?

• RR

• Rr

• rr

• rR

Tags

NGSS.HS-LS3-1

What is the probability of heterozygous offspring in this cross?

• 1/4 or 25%

• 2/4 or 50%

• 0/4 or 0%

• 4/4 or 100%

Tags

NGSS.HS-LS3-3

In plants, tall (T) is dominant to short (t).

Draw a punnett square and perform the following cross: Tt x Tt

What is the probability of producing a short plant?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-3

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Phenotype determines genotype

• True

• False

Tags

NGSS.HS-LS3-1

What genotype would go in box 2? And is it Homozygous or Heterozygous?

• BB Heterozygous

• Bb Heterozygous

• bb Homozygous

• Bb Homozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Both parents in this Punnet square

• are homozygous dominant

• are homozygous recessive

• are heterozygous

• have blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2