Genetics

Which of the following genotypes is homozygous recessive?

• RR
• Rr
• rr
• None of the Above

Which of the following terms refers to the different possibilities of a gene?

• chromosome
• DNA
• Punnett Squares
• allele

Tags

NGSS.HS-LS3-2

What does a Punnett Square help you do?

• Determine the ratio of phenotypes
• Determine the ratio of genotypes
• Predict possible traits the offspring will have
• All of the above

Tags

NGSS.HS-LS3-3

A phenotype is the...

• letter combination
• dominant gene
• recessive gene
• physical appearance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Purple is dominant to white. A heterozygous purple flower is crossed with a white flower. What are the genotypes and phenotypes of the offspring?

• 100% Pp (purple)
• 50% Pp (purple); 50% pp (white)
• 75% Pp (purple); 25% pp (white)
• 25% PP, 50% Pp, 25% pp
  75% purple, 25% white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

If a pea plant were homozygous recessive for height, how would its alleles be represented?

• TT
• Tt
• tt
• tT

Tags

NGSS.HS-LS3-1

What is the genotype for this organism?
(E= 3 eyes, e= 1 eye)

• EE
• Ee
• ee
• EE or Ee

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa

• AA
• Aa
• aa
• brown fur

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A woman with blood genotype I(A)i marries a man with blood genotype I(B)i. What is the probability that they would have a child with type O blood?

• 1/1
• 1/2
• 1/3
• 1/4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

If the four existing children in a family are all sons, what chance would there be that the next child would also be a son?

• 75%
• 50%
• 25%
• 20%

Tags

NGSS.HS-LS3-3