CELL DIVISION
MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is only by coincidence, many organisms have an odd number
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The diploid number is always even so that when mitosis occurs each cell gets the same number of chromosmes
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The diploid chromosome number represents pairs of chromosomes, one from ech parent, so that it is always an even number
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Chromosomes double very time the cell divides, so after the first division, the number is always even
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Detailed explanation-1: -All organisms have even number of chromosomes because all organisms have chromosomes in homologous pairs where one member of the pair is contributed from each of the parent.
Detailed explanation-2: -Diploid cells always contain an even number of chromosomes because there are two copies of each chromosome, one contributed by the male sperm and one by the female egg.
Detailed explanation-3: -The number is ‘even’ because one whole set is inherited from each of two parents. The number of distinct chromosomes is not necessarily even (humans have 23 pairs).
Detailed explanation-4: -„If there are too many or too few chromosomes, inside a cell, then there will be a corresponding increase or decrease in the amount of proteins that are made. This probably causes cell stress and leads to cellular damage“. In this way, the whole cellular system loses its balance.