Question

Multiple Choice Questions
1. Down's syndrome is due to
a. crossing over
b. linkage
c. sex linked inheritance d. non-disjunction of chromosomes
2. Ovum producing Klinfelter's syndrome shall have chromosome number
b. 22
d. 24
a. 21
c. 23
3. Chromosome number of Down's syndrome or Mongolism is
V. 46
b. 44
d. 47
c. 48
4. Chromosomes were first seen by
a. Strassburger
c. Flemming
b. Hofmeister
d. Waldeyer​

Answer 1

Answer:

1.Down's syndrome is due to

d. non-disjunction of chromosomes

2.Ovum producing Klinfelter's syndrome shall have chromosome number

d. 24

3.Chromosome number of Down's syndrome or Mongolism is

46

4.Chromosomes were first seen by

Flemming

Hope this will help you ;)