(C) When a segment of a chromosome is lost from the middle,it is known as an intercalary deficiency or interstitial deletion.This type of chromosomal

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(C) When a segment of a chromosome is lost from the middle,it is known as an intercalary deficiency or interstitial deletion.This type of chromosomal aberration occurs when two breaks happen in the chromosome,and the segment between the breaks is lost,causing the chromosome to become shorter than its normal length.

Class 12 Biology Principles of Inheritance and Variation Chromosomal disorders

Easy

When one or more genes are missing from the middle part of a chromosome,it is called:

A
Middle loss
B
Partial loss
C
Intercalary deficiency
D
None of the above

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Class 12 Questions

Class 12

Biology Questions

Chapter

Principles of Inheritance and Variation

Subtopic

Chromosomal disorders

Match List-$I$ with List-$II$ and select the correct answer using the codes given below:
List-$I$ (Syndrome) List-$II$ (Chromosomal abnormality)
$(1)$ Patau's syndrome $(A)$ $44 + XXY = 47$
$(2)$ Klinefelter's syndrome $(B)$ $44 + X = 45$
$(3)$ Down's syndrome $(C)$ $46 + 1 = 47$,Chromosome $13^{th}$
$(4)$ Turner's syndrome $(D)$ $46 + 1 = 47$,Chromosome $21^{st}$

List-$I$ (Syndrome)	List-$II$ (Chromosomal abnormality)
$(1)$ Patau's syndrome	$(A)$ $44 + XXY = 47$
$(2)$ Klinefelter's syndrome	$(B)$ $44 + X = 45$
$(3)$ Down's syndrome	$(C)$ $46 + 1 = 47$,Chromosome $13^{th}$
$(4)$ Turner's syndrome	$(D)$ $46 + 1 = 47$,Chromosome $21^{st}$

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