A) all are correct.
How do sexual reproduction and meiosis contribute to genetic variation?
The sexual replica has the capacity to supply a top-notch genetic version in offspring. this modification is due to independent collection and crossing-over all through meiosis, and random union of gametes all through fertilization.
In truth, recombination results in a basic growth within the range of devices that assort independently, and this will increase variation. at the same time as in mitosis, genes are commonly transferred faithfully from one cellular technology to the subsequent; in meiosis and subsequent sexual reproduction, genes get mixed up.
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