On this article, first column, eighth line of the introduction:
By bringing together favourable alleles from different chromosomes, sex and recombination increase the additive genetic variance for fitness [..]
Can you please help me understanding why does recombination increase the additive genetic variance for fitness?
Note: In reaction @mgkrebbs comment, I think that given the subject of this article, when talking about different chromosomes, the authors actually referred exclusively to homologues chromosomes. My question concerns the second part of this sentence anyway: "Why does sex and recombination increase the additive genetic variance for fitness"?
Here is another question on the same article
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