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Sex-linked inheritance, Mendelian and chromosomal disorders

17 solved questions

Every question from past board papers on Sex-linked inheritance, Mendelian and chromosomal disorders, newest paper first. Open any question for its full worked answer.

NEET UG 2025 question paper (official, booklet 45)

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  1. With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in F3 generation.

    Pedigree chart F0-F3 with symbols: unaffected male, affected male, carrier female, unaffected female, affected female; F3 individuals marked with ?

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NEET UG 2024 question paper (official, booklet S6)

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  1. Match List I with List II :

    List I:

    A. Down's syndrome

    B. α-Thalassemia

    C. β-Thalassemia

    D. Klinefelter's syndrome

    List II:

    I. \(11^{th}\) chromosome

    II. 'X' chromosome

    III. \(21^{st}\) chromosome

    IV. \(16^{th}\) chromosome

    Choose the correct answer from the options given below :

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NEET UG 2023 question paper (official, booklet G6)

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  1. Which of the following statements are correct about Klinefelter's Syndrome?

    A. This disorder was first described by Langdon Down (1866).

    B. Such an individual has overall masculine development. However, the feminine development is also expressed.

    C. The affected individual is short statured.

    D. Physical, psychomotor and mental development is retarded.

    E. Such individuals are sterile.

    Choose the correct answer from the options given below :

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  2. Broad palm with single palm crease is visible in a person suffering from-

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  3. Which one of the following symbols represents mating between relatives in human pedigree analysis?

    Four pedigree symbol options (1)-(4) for mating between relatives

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NEET UG 2022 question paper (official, booklet R6)

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  1. Which of the following occurs due to the presence of autosome linked dominant trait ?

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  2. If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?

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NEET UG 2021 question paper (official, booklet M4)

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  1. Mutations in plant cells can be induced by :

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  2. In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased ?

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NEET UG 2020 question paper (official, booklet E1)

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  1. Select the correct match.

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NEET UG 2019 question paper (official, booklet P1)

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  1. What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia, and is sterile ?

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NEET UG 2018 question paper (official, booklet EE)

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  1. A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

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NEET UG 2017 question paper (official, booklet B)

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  1. A disease caused by an autosomal primary non-disjunction is :

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  2. Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.

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NEET UG 2016 Phase 1 question paper (official, booklet A)

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  1. Which of the following most appropriately describes haemophilia ?

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  2. Pick out the correct statements :

    (a) Haemophilia is a sex-linked recessive disease.

    (b) Down's syndrome is due to aneuploidy.

    (c) Phenylketonuria is an autosomal recessive gene disorder.

    (d) Sickle cell anaemia is an X - linked recessive gene disorder.

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NEET UG 2016 Phase 2 question paper (official, booklet ZZ)

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  1. If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is

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