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प्रश्न
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
उत्तर
the presence of a Y chromosome in a sperm
The sex of a child is determined by the Y chromosome that is present in a sperm.
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संबंधित प्रश्न
Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?
If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote?
In a human, how many chromosmes are present in a sperm in the testes?
The number of pair(s) of sex chromosomes in the zygote of humans is :
(a) one
(b) two
(c) three
(d) four
Which combination of genes in the zygote will produce children with brown eyes?
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
How is sex determined in human beings?
Identify the organism in which ZZ-ZW type of sex determination is observed.
Which of the following determines the sex of a child?
Which of the following group shows ZW-ZZ type of sex determination?
