Question

What will be the chromosome number in the secondary nucleus if the number of chromosomes in an endosperm of seed is 21?

Options

• 7

• 21

• 14

• 28

Answer 1

14

Explanation:

Given:

Endosperm chromosome number = 21 = 3n

So,

`n = 21/3 = 7`

The secondary nucleus is diploid (2n):

2n = 2 × 7 = 14