explain how sexual reproduction gives rise to a more visible variation then the Asexual Reproduction how does this affect the evolution of those organisms that reproduce sexually
Answers
Crossing over is the fundamental cause of origin of variations in sexually reproducing organisms. Asexual reproduction does not involve meiosis and crossing over because of one parent lineage. ... In this way, sexual reproduction gives rise to more viable variations for evolution.
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In sexual mode of reproduction, two individuals having different variations combine their DNA to give rise to new offspring. Therefore, sexual reproduction allows more variation.
In asexual mode of reproduction, variations are very less since variations can only occur when the DNA copying is not accurate as only one individual is creating new offsprings. Variations help the species to survive in all the conditions. Environmental conditions such as heat, light, cold, food availability can change from place to place. At that time, only those variants are able to survive which are resistant to these conditions. This will slowly lead to the evolution of a better adapted species. Thus, variation helps in the evolution of sexually reproducing organism.