Question

Wheat plant is $6n=42$. What will be the number of chromosomes in its monosomic, haploid and monoploid?

• A. $43,21$ and $7$
• B. $41,21$ and $7$
• C. $15,7$ and $7$
• D. $13,7$ and $7$

Answer 1

Answer: (B)

$41,21$ and $7$

1) Monosomic - cell missing a single chromosome i.e 42-1=41

2) Haploid - half the number of chromosomes. ie. 42/2=21

3) monoploid - The term monoploid refers to a cell or an organism that has a single set of chromosomes. Each set is designated by n. Here n=42/6 i.e n=7

So, the correct answer is '41,21 and 7'