Question

Give reason:

(a) Gametes must be produced by meiosis for se.xual reproduction.

(b) Why is meiosis referred to as 'reductional division'?

(c) The children of the same parents, howsoever similar, are different from each other in certain aspects.

Answer 1

$\huge\mathcal{\fcolorbox{lime}{black}{\blue{Question :-}}}$

Give reason:

(a) Gametes must be produced by meiosis for se.xual reproduction.

(b) Why is meiosis referred to as 'reductional division'?

(c) The children of the same parents, howsoever similar, are different from each other in certain aspects.

$\huge\mathcal{\fcolorbox{lime}{black}{\blue{AnsweR :-}}}$

(a) Gametes must be produced by meiosis for se.xual reproduction because the numbers of chromosomes are reduced to half during meiosis and then the normal diploid numbers of chromosomes are regained during the process of fertilization.

(b) Meiosis is referred to as 'reductional division' because the number of chromosomes are reduced to half i.e. out of the 23 pairs of chromosomes in humans, only single set of chromosomes are passed on to the sex cells.

(c) The mixing up or recombination of genes during meiotic division provides for the innumerable variations and diversity in the progeny. That is how, the children of the same parents, howsoever similar, are different from each other in certain aspects.

$\huge\mathcal{\fcolorbox{lime}{black}{\blue{Hope It Helps :)}}}$

Answer 2

Answer:

(a) Gametes must be produced by meiosis for se.xual reproduction because the numbers of chromosomes are reduced to half during meiosis and then the normal diploid numbers of chromosomes are regained during the process of fertilization.

(b) Meiosis is referred to as 'reductional division' because the number of chromosomes are reduced to half i.e. out of the 23 pairs of chromosomes in humans, only single set of chromosomes are passed on to the sex cells.

(c) The mixing up or recombination of genes during meiotic division provides for the innumerable variations and diversity in the progeny. That is how, the children of the same parents, howsoever similar, are different from each other in certain aspects.