Q. 244.8( 5 Votes )

Why is meiosis needed in species that reproduce sexually?

Answer :

i) Meiosis is a type of cell division wherein the number of DNA of the germ cells is reduced to half and the full number of DNA is restored only after the male and female germ cells have fused together.


ii) Species that reproduce sexually rely on the fertilization of the eggs in the female by the sperms from the male.


iii) DNA from both the parent germ cells combines during sexual reproduction.


iv) If the copies of DNA are to be combined then this would result in double the amount of DNA every time a new individual is born. This is not possible as the individual would not survive.


v) Since the two germ cells need to fuse together for the production of an offspring, it is necessary that the number of DNA in both the cells is half so that when the cells fuse, the correct full number can be restored.


vi) For this reason, meiosis is needed during sexual reproduction so that the amount of DNA can be reduced into half in the germ cells which makes it possible for the two germ cells to fuse and have a stable amount of DNA in the offspring.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Goprep Genius Quiz | Reproduction39 mins
Champ Quiz | How is Sex DeterminedFREE Class
Flower & Its Parts52 mins
Asexual Reproduction36 mins
Male and Female Reproductive System30 mins
Reproduction in Single Celled Organisms42 mins
Reproduction in single celled organisms10 mins
Sexual Reproduction in Flowering Plants45 mins
How did Humans Evolve33 mins
How do we See?43 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses