science
Grade-10
Easy
Question
What is the evolutionary purpose of cells that undergo crossing over?
Produce genetically identical gametes
Increase genetic diversity
To prevent mutations
Keep the redundancy of the cell high
Produce genetically identical gametes
Increase genetic diversity
To prevent mutations
Keep the redundancy of the cell high
Hint:
Crossing over causes variation in the offspring.
The correct answer is: Increase genetic diversity
In the context of genetics and genomics, crossover refers to the exchange of DNA between pairs of homologous chromosomes (one from each parent) that occur during oocyte and sperm cell development (meiosis). This process results in new combinations of alleles in the formed gametes (egg or sperm) and ensures genomic variation in all generated offspring.
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