Question:
Genetic recombination is due to
Genetic recombination is due to
Updated On: Jul 28, 2022
- fertilization & meiosis
- mitosis & meiosis
- fertilization & mitosis
- none of these
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The Correct Option is A
Solution and Explanation
Genetic recombination or reshuffling of genes is due to crossing over during meiosis and when gametes fuse randomly (fertilization) it brings different gene combinations together.
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Top Questions on Significance Of Meiosis
- Match the description (given in column I) with correct stage of prophase I (given column II) and choose the correct option.
Column I
Column II
A. Chromosomes are moved to
spindle fibreI. Pachytene B. Centromore splits and
chromatids move apartII. Zygote C. Paring between homologous
chromosomes takes placeIII. Anaphase D. Crossing between
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Concepts Used:
Significance of Meiosis
- Meiosis is responsible for the genesis of sex cells or gametes that are responsible for sexual reproduction.
- It switches on or activates the genetic information for the development of sex cells and switches off or deactivates the sporophytic information.
- It sustains the constant number of chromosomes by halving the same. This is necessary because the chromosome number doubles after fertilization.
- The genetic mutation takes place due to irregularities in cell division by meiosis. The mutations that are advantageous are carried on by natural selection.