BIO 111 Exam 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: in the ratio of 1 red: 2 roan: 1 white?
Answer:
a. red x white b. roan x roan c. white x roan d. red x roan e. The answer cannot be
determined from the information provided b. roan x roan
Q: Cystic fibrosis results from a single gene mutation and affects the lungs, the
pancreas, the digestive system, and other organs resulting in symptoms ranging
from breathing difficulties to recurrent infections. Which of the following terms
best describes this?
Answer:
a. incomplete dominance b. multiple alleles c. pleiotropy d. epistasis e. codominance
c. pleiotropy
Q: A woman who has blood type A has a daughter who is type O and a son who is
type B. Which of the following is a possible partial genotype for the son?
Answer:
a. I^BI^B b. I^BI^A c. ii d. I^Bi e. I^AI^A d. I^Bi
, BIO 111 Exam 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: When Thomas Hung Morgan crossed his red-eyed F1 generation flies to each
other, the F2 generation included both red- and white-eyed flies. Remarkably, all
the white-eyed flies were males. What was the explanation for this result?
Answer:
a. The gene involved is on the Y chromosome b. The gene involved is on the X
chromosome c. The gene involved is on an autosome, but only in males d. Other
male-specific factors influence eye color in flies e. Other female-specific factors
influence eye color in flies b. The gene involved is on the X chromosome
, BIO 111 Exam 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Males are more often affected by sex-linked traits than females because
Answer:
a. male hormones such as testosterone often alter the effects of mutations on the X
chromosome
b. female hormones such as estrogen often compensate for the effects of mutations
on the X
chromosome
c. X chromosomes in males generally have more mutations than X chromosomes in
females
d. males are hemizygous for the X chromosome
e. mutations on the Y chromosome often worsen the effects of X-linked utations d.
males
are hemizygous for the X chromosome
Q: In mice, coat color (agouti (i.e. tan), black, or albino) is controlled through
recessive epistasis.
Answer:
The two independent assortment genes are: 1) D controls pigment color; D is agouti,
d is black
2) A controls use of pigment; A allows pigment use, a blocks pigment use.
Latest 2026 Update
Q: in the ratio of 1 red: 2 roan: 1 white?
Answer:
a. red x white b. roan x roan c. white x roan d. red x roan e. The answer cannot be
determined from the information provided b. roan x roan
Q: Cystic fibrosis results from a single gene mutation and affects the lungs, the
pancreas, the digestive system, and other organs resulting in symptoms ranging
from breathing difficulties to recurrent infections. Which of the following terms
best describes this?
Answer:
a. incomplete dominance b. multiple alleles c. pleiotropy d. epistasis e. codominance
c. pleiotropy
Q: A woman who has blood type A has a daughter who is type O and a son who is
type B. Which of the following is a possible partial genotype for the son?
Answer:
a. I^BI^B b. I^BI^A c. ii d. I^Bi e. I^AI^A d. I^Bi
, BIO 111 Exam 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: When Thomas Hung Morgan crossed his red-eyed F1 generation flies to each
other, the F2 generation included both red- and white-eyed flies. Remarkably, all
the white-eyed flies were males. What was the explanation for this result?
Answer:
a. The gene involved is on the Y chromosome b. The gene involved is on the X
chromosome c. The gene involved is on an autosome, but only in males d. Other
male-specific factors influence eye color in flies e. Other female-specific factors
influence eye color in flies b. The gene involved is on the X chromosome
, BIO 111 Exam 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Males are more often affected by sex-linked traits than females because
Answer:
a. male hormones such as testosterone often alter the effects of mutations on the X
chromosome
b. female hormones such as estrogen often compensate for the effects of mutations
on the X
chromosome
c. X chromosomes in males generally have more mutations than X chromosomes in
females
d. males are hemizygous for the X chromosome
e. mutations on the Y chromosome often worsen the effects of X-linked utations d.
males
are hemizygous for the X chromosome
Q: In mice, coat color (agouti (i.e. tan), black, or albino) is controlled through
recessive epistasis.
Answer:
The two independent assortment genes are: 1) D controls pigment color; D is agouti,
d is black
2) A controls use of pigment; A allows pigment use, a blocks pigment use.
