112 ❯ STEP 4. Review the Knowledge You Need to Score High
- Assume that gray squirrel color results from a
dominant allele G. The father squirrel is black,
the mother squirrel is gray, and their first baby is
black. What is the probability that their second
baby is also black?
A. 1.00
B. 0.75
C. 0.50
D. 0.25
E. 0.00
10.Imagine that tulips are either yellow or white.
You start growing tulips and find out that if
you want to get yellow tulips, then at least one
of the parents must be yellow. Which color is
dominant?
A. White
B. Yellow
C. Neither; it is some form of intermediate
inheritance
D. Cannot be determined from the given
information
11.Suppose that 200 red snapdragons were mated
with 200 white snapdragons and they produced
only pink snapdragons. The mating of two pink
snapdragons would most likely result in off-
spring that are
A. 50 percent pink, 25 percent red, 25 percent
white
B. 100 percent pink
C. 25 percent pink, 50 percent red, 25 percent
white
D. 75 percent red, 25 percent white
E. 100 percent red
12.Which of the following represents the number of
possible gametes produced from a genotype of
RrBBCcDDEe?
A. 2
B. 4
C. 8
D. 16
E. 32
13.Which of the following diseases is notcaused by
trisomy nondisjunction?
A. Down syndrome
B. Klinefelter syndrome
C. Turner syndrome
D. Patau syndrome
E. Edwards syndrome
14.The pedigree below is most likely a pedigree of a
condition of which type of inheritance?A. Autosomal dominant
B. Autosomal recessive
C. Sex-linked dominant
D. Sex-linked recessive
E. A gene present only on the Y chromosome
(holandric)A