MODULE 2 LECTURE QUIZ BIO
182 WITH DETAILED
QUESTIONS AND ACCURATE
ANSWERS GRADED A+ (2026
VERSION)
If the twins, Thomas and Vincent Seris, (featured in the short documentary shown prior
to this lecture) were to choose to have children someday, what is the likelihood that
their children would also have XP (Xeroderma pigmentosum)? - answer-0%
If you were to cross a black and a white guinea pig, what would you expect in the F1
generation? (keeping in mind that black is the dominant trait)
1- All black offspring
2-mAll white offspring
3- 3:1 black to white offspring
4- 3:1 white to black offspring - answer-All black offspring
If you were to cross those F1 guinea pigs, what outcome would you expect in the F2
generation?
Parental generation: White x black
F1 generation: ??
F2 generation: ?? - answer-3:1 black to white offspring
Which cellular process explains Gregor Mendel's principle of equal segregation? -
answer-The process of meiosis
Mendel's principle of independent assortment is only true if the traits are coded for by
genes.... - answer-that are located on different chromosomes or very far apart on the
same chromosome.
, If you performed a cross of this sort with pea plants: GgWw x ggWw -
What proportion would you expect to be yellow (G) and smooth (W)? - answer-3/8
A purple-flowered (P allele) pea plant of unknown genotype is crossed with a white-
flowered pea plant (little p allele). None of the offspring have white flowers. What is the
genotype of the purple-flowered parent? *Note: this is what is called a 'test cross'. -
answer-PP
What is the probability of the following three independent events all occurring with three
rolls of the dice? (six-sided dice) - calculated using the multiplicative probability of
probability.
-Rolling less than a 4 on your first roll
-Rolling a 6 on the second roll of the dice
-Rolling an even number on the third roll of the dice - answer-1/24
Under normal circumstances, recessive alleles.... (Choose all that apply) - answer--are
less likely to be 'expressed' in phenotype compared to dominant alleles.
-for most recessive alleles, the mutated allele produces a non-functioning version of the
relevant protein.
If two rattlesnakes are of normal coloration but heterozygous for the albino trait, what
percentage of their offspring would you expect to be albinos? - answer-25%
What features tend to distinguish autosomal recessive traits in a pedigree? (choose all
that apply) - answer--Rare recessive traits tend to be distributed sparsely in pedigrees.
-Consanguineous marriages (inbreeding) increase the incidence of such affected
individuals in a family tree.
What outcome would you expect from a cross of red-eyed female fruit flies, Xw+Xw+
with white-eyed male fruit flies XwY? This is an example of a sex-linked trait. - answer-
100% red-eyed offspring of both sexes
182 WITH DETAILED
QUESTIONS AND ACCURATE
ANSWERS GRADED A+ (2026
VERSION)
If the twins, Thomas and Vincent Seris, (featured in the short documentary shown prior
to this lecture) were to choose to have children someday, what is the likelihood that
their children would also have XP (Xeroderma pigmentosum)? - answer-0%
If you were to cross a black and a white guinea pig, what would you expect in the F1
generation? (keeping in mind that black is the dominant trait)
1- All black offspring
2-mAll white offspring
3- 3:1 black to white offspring
4- 3:1 white to black offspring - answer-All black offspring
If you were to cross those F1 guinea pigs, what outcome would you expect in the F2
generation?
Parental generation: White x black
F1 generation: ??
F2 generation: ?? - answer-3:1 black to white offspring
Which cellular process explains Gregor Mendel's principle of equal segregation? -
answer-The process of meiosis
Mendel's principle of independent assortment is only true if the traits are coded for by
genes.... - answer-that are located on different chromosomes or very far apart on the
same chromosome.
, If you performed a cross of this sort with pea plants: GgWw x ggWw -
What proportion would you expect to be yellow (G) and smooth (W)? - answer-3/8
A purple-flowered (P allele) pea plant of unknown genotype is crossed with a white-
flowered pea plant (little p allele). None of the offspring have white flowers. What is the
genotype of the purple-flowered parent? *Note: this is what is called a 'test cross'. -
answer-PP
What is the probability of the following three independent events all occurring with three
rolls of the dice? (six-sided dice) - calculated using the multiplicative probability of
probability.
-Rolling less than a 4 on your first roll
-Rolling a 6 on the second roll of the dice
-Rolling an even number on the third roll of the dice - answer-1/24
Under normal circumstances, recessive alleles.... (Choose all that apply) - answer--are
less likely to be 'expressed' in phenotype compared to dominant alleles.
-for most recessive alleles, the mutated allele produces a non-functioning version of the
relevant protein.
If two rattlesnakes are of normal coloration but heterozygous for the albino trait, what
percentage of their offspring would you expect to be albinos? - answer-25%
What features tend to distinguish autosomal recessive traits in a pedigree? (choose all
that apply) - answer--Rare recessive traits tend to be distributed sparsely in pedigrees.
-Consanguineous marriages (inbreeding) increase the incidence of such affected
individuals in a family tree.
What outcome would you expect from a cross of red-eyed female fruit flies, Xw+Xw+
with white-eyed male fruit flies XwY? This is an example of a sex-linked trait. - answer-
100% red-eyed offspring of both sexes
