Question

which of the following is not one of the way fitness cost of sexual reproduction?

a)courtship and mating rituals associated with courtship are time consuming

b)recombination of alleles during meiosis can break up beneficial combinations of alleles

c)in sexual reproduction, fitness decreases by two fold

d) sexually reproducing organisms experience the effects of muller's ratchet at a disproportionately higher rate than asexually reproducing organisms

e)coming into close contact with other organisms during copulation facilities disease transmittance

Answer 1

The correct answer is b)recombination of alleles during meiosis can break up beneficial combinations of alleles. During meiosis recombination occurs that cause cross over of DNA which results in new strands of DNA having new combination of alleles. Thus it cause the mutation to restrict to a gene only. New phenotype are produced that give unique identity to each individual. It even cause genetic variation that help to eradicate defective alleles and pair up the dominant alleles which produce healthty offsprings.

Rest of the option are correct and reasonable.

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