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

  • A
    Erythroblastosis foetalis - $X$-linked
  • B
    Down's syndrome - $44$ autosomes + $XO$
  • C
    Klinefelter's syndrome - $44$ autosomes + $XXY$
  • D
    Colour blindness - $Y$-linked

Explore More

Similar Questions

The formation of multivalents at meiosis in a diploid organism is due to

The exchange of chromosomal segments between two non-homologous pairs of chromosomes is known as:

In which one of the following combinations $(a - d)$ the number of chromosomes of the present-day hexaploid wheat is correctly represented?

Read the following statements and choose the correct set of statements :
$(a)$ In sickle cell anaemia the mutant haemoglobin molecule undergoes polymerisation under high oxygen tension
$(b)$ Thalassemia is a qualitative problem
$(c)$ Turner's syndrome,Klinefelter's syndrome are common examples of chromosomal disorders.
$(d)$ Haemophilia is a sex-linked recessive disease

Difficult
View Solution

What is the cause of $Down's$ syndrome?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo