Monohybrid Cross

In watermelons, green rinds (G) are dominant to striped rinds (g).  What is the genotype of a heterozygous green watermelon?

• GG
• Gg
• gg
• green

Tags

NGSS.HS-LS3-1

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-LS3-3

How many alleles (letters) do each person carry for a trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

Tags

NGSS.HS-LS3-2

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Tags

NGSS.HS-LS3-2

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Tags

NGSS.HS-LS3-1

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 a homozygous dominant allele (AA) is crossed with a homozygous recessive allele (aa), all of the resulting offspring will be

• Homozygous dominant

• Heterozygous

• Homozygous Recessive

Tags

NGSS.HS-LS3-1