(D) : Down's syndrome is an autosomal aneuploidy caused by the presence of an extra chromosome number $21$. During oogenesis,non-disjunction occurs,le

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(D) : Down's syndrome is an autosomal aneuploidy caused by the presence of an extra chromosome number $21$. During oogenesis,non-disjunction occurs,leading to both chromosomes of the $21$st pair passing into a single egg. This results in a trisomy of chromosome $21$ in the zygote.

Class 12 Biology Principles of Inheritance and Variation Chromosomal disorders

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$A$ disease caused by an autosomal primary non-disjunction is

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A
Klinefelter's syndrome
B
Turner's syndrome
C
Sickle cell anaemia
D
Down's syndrome

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Class 12 Questions

Class 12

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Chapter

Principles of Inheritance and Variation

Subtopic

Chromosomal disorders

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Assertion: Aneuploidy may be of hypoploidy or hyperploidy type.
Reason: Monosomy lacks one pair of chromosomes.

MediumAIIMS 2011

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Give examples of disorders caused by sex chromosomal abnormalities and describe them briefly.

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Turner's syndrome in humans is caused by

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The person with Klinefelter's syndrome has which of the following chromosomal constitutions?

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Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?

MediumAIPMT 2008

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$A$ disease caused by an autosomal primary non-disjunction is

Similar Questions

Assertion: Aneuploidy may be of hypoploidy or hyperploidy type.Reason: Monosomy lacks one pair of chromosomes.

Give examples of disorders caused by sex chromosomal abnormalities and describe them briefly.

Turner's syndrome in humans is caused by

The person with Klinefelter's syndrome has which of the following chromosomal constitutions?

Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?

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Assertion: Aneuploidy may be of hypoploidy or hyperploidy type.
Reason: Monosomy lacks one pair of chromosomes.