Question
Asked Oct 16, 2019
  1. The maintenance of sexual reproduction in populations is a challenge for evolutionary biologists. Explain the paradox of sex and identify reasons that sex is prominent in natural populations.

 

 

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Step 1

The evolution of sex can be divided into two major events, the origin and the maintenance of sex.

Step 2

The maintenance of sex is an imprtant aspect of evolutionary biology. Because sex is costly in evolutionary terms, but at the same time widespread among eukaryotes, it presents an evolutionary paradox.

Since, unlike asexual reproduction, in sexual reproduction, only either of the gender is capable to produce offspring, the population expansion cost is higher in sexual reproduction.

The spread of selfish cytoplasmic genes is higher in sexual reproduction. Sexual reproduction implies that chromosomes and alleles segregate and recombine in every generation, but not all genes are transmit...

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