SCIENCE
GENETIC AND MENDELS LAW OF HEREDITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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24
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46
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48
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None of the above
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Detailed explanation-1: -Number of chromosome in human sperm or ovum is 23.
Detailed explanation-2: -(This process takes place only when sperm enters the egg). Meiosis 2 is also equational division and thus the ovum is haploid (n=23). Hence the correct answer is option ‘c’. Note: Humans show 46 chromosomes ( 23 pairs).
Detailed explanation-3: -Normally, each cell in the human body has 23 pairs of chromosomes (46 total chromosomes).
Detailed explanation-4: -Humans have 46 chromosomes out of which 22 pairs or 44 chromosomes are called autosomes and one pair of chromosomes, i.e. XX in female and XY in male are called heterosomes or sex chromosomes.
Detailed explanation-5: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females.