Question 35
Comment on the statement-meiosis enables the conservation of specific chromosome number of each species even through the process per se results in reduction of chromosome number.

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Solution

Meiosis is the mechanism by which conservation of specific chromosome number of each species is achieved across generations in sexually reproducing organisms. Even though the process results in reduction of chromosome number by half, it is gradually conserved by union of male gamete (n) and female gamete (n) in next generation.
Meiosis also increases the genetic variability in the population of organisms from one generation to the next.

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Q. In Meiosis, the chromosome number in the daughter cells are reduced to half that of their parent cells. Guess, what would happen, if the reduction of chromosome number is not done?

Question 1
Meiosis in diploid organisms results in
(a) production of gametes
(b) reduction in the number of chromosomes
(c) introduction of variation
(d) All of the above

Consider the following statements:

(i) In mitosis, two daughter cells are formed

(ii) In meiosis, there is no reduction in chromosome number

(iii) Products of meiosis are, four cells each with “n” number of chromosomes

(iv) Mitosis takes place both in somatic and germ cells.

Which of the above statements are true?

Q. State how meiosis maintains the chromosome number in a species. [2 MARKS]

Q. In a diploid human cell, chromosome number is 46. What will be the chromosome number of each sperm after meiosis?

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Question 35 Comment on the statement-meiosis enables the conservation of specific chromosome number of each species even through the process per se results in reduction of chromosome number.

Question 35
Comment on the statement-meiosis enables the conservation of specific chromosome number of each species even through the process per se results in reduction of chromosome number.