AP Bio Unit 4 Test Prep

In the game Yahtzee, you are awarded 50 points if you roll 5 of a kind. How would you calculate the probability of rolling 5 die and getting ALL of the die landing on 1?

• 1/6 x 1/6 x 1/6 x 1/6 x 1/6

• 1/6 + 1/6 + 1/6 + 1/6 + 1/6

• (1/6)^1

• (1/6 x 1/6) + 1/6 - (1/6 x 1/6)

In some plants the trait for being tall or short is homozygous. The heterozygous genotype codes for medium height. If crossed, what is the probability that two medium plants produce a short plant?

• 0%

• 25%

• 50%

• 100%

Given: A = axial / a = terminal and G = green / g = yellow ... If two plants are crossed and produce 47 axial/green, 50 axial/yellow, 46 terminal/green, and 48 terminal/yellow, what is probably the parental genotypes?

• AaGg x AaGg

• AaGg x aagg

• AAGG x aagg

• aaGg x aaGG

Which 2 genes on this chromosome would most likely segregate (separate) together into a daughter cell?

• C and B

• A and D

• A and B

• C and D

What type of inheritance is shown in this pedigree?

• autosomal recessive

• x-linked

• mitochondrial

• autosomal dominant

What is probably the genotype of II-3?

• aa

• AA or Aa

• Aa

• AA

A man with type O blood has a daughter that is type O and a son that is type B with the same woman. What is the genotype of each individual?

• man = OO

  woman = BB

  daughter = AO

  son = BB

• man = OO

  woman = BO

  daughter = OO

  son = BO

• man = AO

  woman = BO

  daughter = OO

  son = BB

• man = OA

  woman = BO

  daughter = AO

  son = BO

Two individuals who are both carriers for a recessive trait mate. What is the probability that their child will NOT have the recessive trait?

• 0%

• 25%

• 50%

• 75%

What most likely explains the discrepancy between the observed and expected results?

• The genes for body color and wing size are located on the mitochondrial DNA.

• The genes for body color and wing size displays incomplete dominance.

• The genes for body color and wing size are located on the x-chromosome.

• The genes for body color and wing size are linked.

What disease is caused by the presence of a dominate allele?

• Tay-Sachs

• Sickle Cell

• Huntington's

• Cystic Fibrosis