Escape Room Final Quiz
How many major cell cycle checkpoints are there?
1
2
3
4
Which checkpoint is responsible for making sure the chromosomes are attached to the spindle apparatus?
G1
G2
S
M
Which checkpoint is responsible for making sure environmental conditions are ideal for cell division?
G1
G2
M
S
Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What fraction of the progeny of crosses BbTt × BBtt will be expected to have black fur and long tails?
1/16
3/8
1/2
9/16
Which of the following provides an example of epistasis?
Recessive genotypes for each of two genes (aabb) results in an albino corn snake.
In rabbits and many other mammals, one genotype (ee) prevents any fur color from developing.
In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes.
In cacti, there are several genes for the type of spines.
Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The flower color trait in radishes is an example of which of the following?
a multiple allelic system
sex linkage
codominance
incomplete dominance
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Which of the following is a possible phenotype for the father?
A-
O-
B+
AB-
Which of the following is an example of polygenic inheritance?
pink flowers in snapdragons
the ABO blood group in humans
white and purple flower color in peas
skin pigmentation in humans
What is the reason that closely linked genes are typically inherited together?
They are located close together on the same chromosome.
The number of genes in a cell is greater than the number of chromosomes.
Alleles are paired together during meiosis.
Alleles are paired together during meiosis.
A recessive allele on the X chromosome is responsible for red-green color blindness in humans. A woman with normal vision whose father is color blind marries a color-blind male. What is the probability that this couple's first son will be color blind?
1/4
1/2
2/3
3/4
Recombination between linked genes comes about for what reason?
Nonrecombinant chromosomes break and then rejoin with one another.
Independent assortment sometimes fails.
Linked genes travel together at anaphase.
Crossovers between these genes result in chromosomal exchange.
Refer to the pedigree chart in the figure above for a family, some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a dark square or circle. What is the genotype of individual II-5?
WW
Ww
ww
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