Free X-linked Recessive Inheritance MCQs with Answers
45 X-linked Recessive Inheritance MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
X-linked recessive inheritance involves genes on the X chromosome, so males express a recessive allele with no corresponding allele on their single X chromosome, while females may be carriers. Pedigrees cover haemophilia and red-green colour blindness, including carrier mothers, affected sons and the absence of father-to-son transmission.
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- A. X linked recessive
- B. X linked dominant
- C. Dominant autosomes
- D. Y linked inheritance
Explanation: Haemophilia is an X-linked recessive disorder, which means it is more commonly seen in males than females.
Correct answer: X linked recessive- A. Baldness
- B. Albinism
- C. None of these
- D. Myopia
Explanation: Males with higher testosterone levels have a dominant baldness gene, whereas females with lower testosterone levels have a recessive…
Correct answer: Baldness- A. WZ-ZZ type
- B. XY - XX
- C. X0 - XX
- D. Compound Sex
Explanation: In Drosophila, the sex determination is based on the presence of sex chromosomes.
Correct answer: XY - XX- A. XX
- B. XY
- C. XO
- D. X
Explanation: In butterflies, females typically have a ZW sex-determination system, where females are ZW and males are ZZ.
Correct answer: XY- A. Alports syndrome
- B. Coffin-Lowry syndrome
- C. Hemophilia
- D. Thalassemia
Explanation: Option C is correct.Hemophilia is a condition that renders the individual less able to form blood clots.
Correct answer: Hemophilia