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प्रश्न
The ratio of the number of chromosomes in a human zygote and a human sperm is ______
पर्याय
2 : 1
3 : 1
1 : 2
1 : 3
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उत्तर
2 : 1
Explanation:
The number of chromosomes in human sperm is half the number of chromosomes in a zygote, i.e., their ratio is 2 : 1.
संबंधित प्रश्न
Newly formed DNA copies may not be identical at times. Give one reason.
Mention two functions of human testes.
Fertilisation results immediately in the formation of ______.
The male gametes in a flower and in a human are produced respectively in :
(a) stigma and ovary
(b) anther and style
(c) ovary and testes
(d) anther and testes
The germ cell A produced by a person X is round in shape and it fuses with another germ cell B having a long tail and produced by a person Y. The fusion of A and B produces a new cell C. The cell C divides repeatedly and grows inside the organ D of person X to form E in which the body features of the unborn baby are not much developed. E grows further to form F in which the various body features of the unborn baby (like hands, legs, head, eyes, and ears, etc.) can be identified. F grows further and ultimately forms a baby. What are A, B, C, D, E and F? Out of the two persons X and Y, which one is male and which one female?
Describe in brief the role of testis in human male reproductive system.
Describe in brief the role of ureter in human male reproductive system.
Choose the correct answer:
The aim of sexual reproduction _________
Choose the correct answer:
Binary fission is a method of __________
Testes and ovaries are classified as which category of reproductive organs?
