Welcome to the Sex Linkage In Human MDCAT MCQs with Answers. In this post, we have shared Sex Linkage In Human Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Biology offers a chance to enhance your knowledge regarding Sex Linkage In Human MCQs in this MDCAT Online Test.
Hemophilia in humans is caused by a mutation on the:
a) Y chromosome
b) X chromosome
c) Autosomes
d) Mitochondrial DNA
Which of the following is an example of a sex-linked recessive disorder in humans?
a) Cystic fibrosis
b) Hemophilia
c) Huntington’s disease
d) Sickle cell anemia
Color blindness in humans is more common in males because the gene is located on the:
a) Y chromosome
b) Autosomes
c) X chromosome
d) Mitochondrial DNA
A male inherits his X chromosome from:
a) His mother
b) His father
c) Both parents
d) Neither parent
In sex-linked recessive disorders, females are typically:
a) Affected
b) Carriers
c) Immune
d) Unaffected
A woman who is a carrier for color blindness marries a normal man. What percentage of their sons will be colorblind?
a) 0%
b) 25%
c) 50%
d) 100%
A female can express an X-linked recessive trait if:
a) She inherits two copies of the recessive allele
b) She inherits one copy of the recessive allele
c) The trait is Y-linked
d) The father carries the allele
Which of the following is a Y-linked trait in humans?
a) Male-pattern baldness
b) Hemophilia
c) Hypertrichosis
d) SRY gene-related male sex determination
If a man has hemophilia, he inherited the gene from his:
a) Father
b) Mother
c) Both parents
d) Grandparents
What is the chance that a daughter will inherit hemophilia if her mother is a carrier and her father is normal?
a) 0%
b) 25%
c) 50%
d) 100%
Which of the following is NOT a sex-linked disorder?
a) Duchenne muscular dystrophy
b) Hemophilia
c) Huntington’s disease
d) Red-green color blindness
In humans, sex-linked traits are primarily associated with genes located on the:
a) X chromosome
b) Y chromosome
c) Both X and Y chromosomes
d) Autosomes
A colorblind woman will pass the allele for color blindness to:
a) All of her daughters
b) All of her sons
c) Half of her daughters
d) None of her children
A male with red-green color blindness marries a carrier female. What is the chance that their daughters will be colorblind?
a) 0%
b) 25%
c) 50%
d) 100%
In sex-linked inheritance, the father can pass an X-linked trait to:
a) His sons
b) His daughters
c) Both sons and daughters
d) Neither sons nor daughters
A male inherits his Y chromosome from his:
a) Mother
b) Father
c) Both parents
d) Grandmother
If a male inherits an X-linked recessive disorder, his mother must be:
a) A carrier
b) Affected
c) Either a carrier or affected
d) Unaffected
What is the probability that a daughter of a colorblind man and a carrier woman will be colorblind?
a) 0%
b) 25%
c) 50%
d) 100%
A female with one normal allele and one allele for hemophilia is:
a) Affected
b) A carrier
c) Immune
d) Normal
Which of the following individuals is most likely to show a sex-linked recessive trait?
a) Heterozygous female
b) Homozygous female
c) Hemizygous male
d) Heterozygous male
Which of the following diseases is inherited as an X-linked recessive trait?
a) Sickle cell anemia
b) Down syndrome
c) Duchenne muscular dystrophy
d) Huntington’s disease
The gene for red-green color blindness in humans is located on the:
a) Y chromosome
b) X chromosome
c) Autosomes
d) Mitochondrial DNA
Which of the following traits is Y-linked?
a) Sickle cell anemia
b) Hypertrichosis
c) Hemophilia
d) Color blindness
A man with a sex-linked disorder like hemophilia will pass the gene to:
a) All of his sons
b) Half of his sons
c) Half of his daughters
d) All of his daughters
In sex-linked recessive traits, males tend to be more affected than females because:
a) Males have two X chromosomes
b) Males have only one X chromosome
c) Females are always carriers
d) Males are more likely to inherit the trait
A carrier woman for hemophilia marries a man with hemophilia. What percentage of their daughters will have hemophilia?
a) 0%
b) 25%
c) 50%
d) 100%
Which of the following sex-linked traits affects blood clotting?
a) Color blindness
b) Duchenne muscular dystrophy
c) Hemophilia
d) Hypertrichosis
Which parent determines the sex of the offspring in humans?
a) The mother
b) The father
c) Both parents equally
d) Neither parent
Which of the following is true about Y-linked inheritance?
a) It affects both males and females equally
b) It is passed from fathers to sons
c) It skips generations
d) It affects only females
Which of the following individuals is least likely to show an X-linked recessive disorder?
a) Hemizygous male
b) Homozygous female
c) Heterozygous female
d) Affected male
A woman who is homozygous for a normal gene on the X chromosome and marries a colorblind man will have:
a) All colorblind sons
b) All colorblind daughters
c) All daughters carriers and normal sons
d) All normal children
If a man has a Y-linked trait, what percentage of his sons will inherit it?
a) 0%
b) 50%
c) 75%
d) 100%
A heterozygous female carrier for red-green color blindness marries a normal man. What percentage of their daughters will be carriers?
a) 0%
b) 25%
c) 50%
d) 100%
In humans, males inherit their X chromosome from their:
a) Mother
b) Father
c) Both parents
d) Maternal grandmother
Which of the following is an example of an X-linked dominant trait?
a) Hemophilia
b) Red-green color blindness
c) Vitamin D-resistant rickets
d) Duchenne muscular dystrophy
A male has hemophilia. What percentage of his daughters will be carriers if he marries a normal woman?
a) 0%
b) 25%
c) 50%
d) 100%
Which sex-linked recessive disorder leads to muscle degeneration?
a) Hemophilia
b) Color blindness
c) Duchenne muscular dystrophy
d) Cystic fibrosis
A colorblind woman marries a normal man. What percentage of their sons will be colorblind?
a) 0%
b) 25%
c) 50%
d) 100%
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