BW: Monohybrid Crosses

A green pea plant (Gg) is crossed with a yellow pea plant (gg). Describe the genotype of the offspring.

• 50% heterozygous and 25% homozygous recessive

• 50% heterozygous and 50% homozygous recessive

• 100% homozygous recessive

• 25% heterozygous and 50% homozygous

Tags

NGSS.HS-LS3-1

Which of the following genotypes is homozygous dominant?

• A

• Aa

• AA

• aa

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-LS3-3

If brown eyes are dominant over blue eyes, what would be the parent genotypes if two heterozygous brown eyed persons were crossed?

• BB and bb

• BB and Bb

• Bb and Bb

• bb and Bb

Tags

NGSS.HS-LS3-1

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 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

Having a Widow's Peak is dominant (W) over not having one (w). If parent A (WW) and parent B (ww) have a child, what is the likelihood that--

• 100%

• The child will have a widow's peak

• 0%

• The genotype of these children

• Ww

• The child will not have a widow's peak

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Which of the following must be the father's genotype?

• RR

• Rr

• rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Different versions of a trait (tall or short, white or purple) are called

• alleles

• traits

• versions

• genes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2