(A) Down's syndrome is caused by the presence of an additional copy of chromosome number $21$,a condition known as trisomy of $21$. Individuals affect

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(A) Down's syndrome is caused by the presence of an additional copy of chromosome number $21$,a condition known as trisomy of $21$. Individuals affected by this syndrome exhibit characteristic features such as short stature,small round head,furrowed tongue,partially open mouth,and significantly retarded physical,psychomotor,and mental development.

Class 12 Biology Principles of Inheritance and Variation Chromosomal disorders

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Physical,psychomotor,and mental development is retarded in an individual affected with

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

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Class 12 Questions

Class 12

Biology Questions

Chapter

Principles of Inheritance and Variation

Subtopic

Chromosomal disorders

What is the significance of Barr bodies and drumsticks to geneticists and biologists?

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Which pair of chromosomes is concerned with Down's syndrome?

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$A$ human female with Turner's syndrome:

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Choose the correct answer regarding the following statements:
$(i)$ Sickle-cell anaemia is controlled by three pairs of alleles.
$(ii)$ Trisomy is a chromosomal disorder.
$(iii)$ $47$ chromosomes are present in a person having Turner's syndrome.

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Which of the following disorders is seen in human females only?

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Physical,psychomotor,and mental development is retarded in an individual affected with

Similar Questions

What is the significance of Barr bodies and drumsticks to geneticists and biologists?

Which pair of chromosomes is concerned with Down's syndrome?

$A$ human female with Turner's syndrome:

Choose the correct answer regarding the following statements:$(i)$ Sickle-cell anaemia is controlled by three pairs of alleles.$(ii)$ Trisomy is a chromosomal disorder.$(iii)$ $47$ chromosomes are present in a person having Turner's syndrome.

Which of the following disorders is seen in human females only?

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Exam Paper Generator

Online Exam Module

Choose the correct answer regarding the following statements:
$(i)$ Sickle-cell anaemia is controlled by three pairs of alleles.
$(ii)$ Trisomy is a chromosomal disorder.
$(iii)$ $47$ chromosomes are present in a person having Turner's syndrome.