Question

Haploid number is $10.$ What shall be the tetrasomic number?

• A. $22$
• B. $18$
• C. $20$
• D. $19$

Answer 1

The correct option is A $22$

Tetrasomy is possessing four instead of the usual pair of chromosomes in an otherwise diploid cell; that is, having a chromosome number of 2n + 2.

Relating to a cell nucleus in which one chromosome is represented four times, whereas all others are present in the normal number.

So here 10 is the haploid number. tetrasomic number is 2n+2= 2*10+2=22

So, the correct answer is '22'