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10Humans have 23 pairs of chromosomes.
Males have XX sex chromosomes.
Females have XY sex chromosomes.
Sperm produced by male can carry either X or Y chromosome.
Ovum always carries an X chromosome.
Fertilization of X-sperm with X-ovum produces a male child.
Fertilization of Y-sperm with X-ovum produces a male child.
Probability of having a son is 50%.
Sex chromosomes do not influence the sex of the fetus.
Meiosis occurs in testes and ovaries to produce gametes.
Percentage: 0%
What is the main function of sex chromosomes?
How many pairs of chromosomes are there in human body cells?
How many autosomes do humans have?
What is the sex chromosome of a male?
What is the sex chromosome of a female?
Which type of cell division produces haploid gametes?
A sperm carrying a Y chromosome fuses with an X-carrying ovum. What will be the sex of the child?
Which gamete has 22+X chromosomes?
During meiosis in males, what percentage of sperm carry Y chromosome?
Fertilization of XX gametes produces:
Humans have a total of ______ pairs of chromosomes.
Among the 23 pairs of chromosomes, ______ pairs are autosomes.
The remaining ______ pair is the sex chromosome or heterosome.
Male individuals have ______ sex chromosomes.
Female individuals have ______ sex chromosomes.
Meiotic cell division in testes produces sperm with either ______+X or 22+Y chromosomes.
Meiotic cell division in ovaries produces ovum with ______+X chromosomes only.
Fertilization of an X-carrying sperm with an X-carrying ovum produces a ______ child (44+XX).
Fertilization of a Y-carrying sperm with an X-carrying ovum produces a ______ child (44+XY).
The probability of having a son or daughter is ______% during fertilization.