science
Grade-10
Easy
Question
Which of the following does not cause variation?
New gene combinations by meiosis
Errors occurring during replication
Mitosis
Mutations caused by environmental factors
New gene combinations by meiosis
Errors occurring during replication
Mitosis
Mutations caused by environmental factors
Hint:
Meiosis has crossed over genes. In this, there is a crossing over of genes.
The correct answer is: Mitosis
- Mitosis is the process of cell replication in which a cell divides into two genetically identical daughter cells. At various stages of mitosis, the cell's chromosomes are replicated and evenly distributed to the two new nuclei of the daughter cell.
- For mitosis, there is no crossover as in the case of meiosis. Therefore, there is no possibility of recombination or genetic variation. Therefore, meiosis results in significant genetic variation, whereas mitosis does not.
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