Question

The ratio of the number of chromosomes in a human zygote and a human sperm is :
(a) 2: 1
(b) 3: 1
(c) 1: 2
(d) 1: 3

Answer 1

(a) 2 : 1

The number of chromosomes in a human sperm is half the number of chromosomes in a zygote, i.e., their ratio is 2 : 1.