Why does sexual reproduction create more variation than asexual reproduction?
Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. Asexual reproduction is one organism dividing into two organisms without shuffling its genes, so the offspring has the same version of genes as did the parent.
Does sexual or asexual reproduction have more variation?
To get diversity in individuals, genetic differences are required, and different phenotypes must be expressed. Since sexual reproduction is more conducive to driving evolution than asexual reproduction, much more genetic diversity is available for natural selection to work on.
Which of the two sexual reproduction or asexual reproduction give rise to more viable variations justify with reasons?
sexual reproduction gives rise to more variation then asexual reproduction because in asexual reproduction single parent organism give rise to offsprings which are genetically identical to its parents .
How are variations caused in sexual reproduction?
Sexual reproduction has the potential to produce tremendous genetic variation in offspring. This variation is due to independent assortment and crossing-over during meiosis, and random union of gametes during fertilization.
What is the cause of variation in asexual reproduction?
The main cause of variations do occur in asexual reproduction is due to mutations. Sometimes other factors like light, humidity, temperature also causes the variation in asexually reproducing organisms. Some times a mutation occurs during cell division so the offspring differ to the parent cell.
How does sexual reproduction give more viable?
Sexual reproduction causes more viable variations due to the following reasons: Error in copying of DNA, which are not highly significant. Random segregation of paternal and maternal chromosome at the time of gamete formation. Exchange of genetic material between homologous chromosomes during the formation of gametes.
How is variation caused in asexual reproduction or during cell division?
If a mutation occurs in cells that will make gametes by meiosis or during meiosis itself, it can be passed on to offspring and contribute to genetic variability of the population. Mutations are the sole source of genetic variability that can occur in asexual reproduction.
What is more important asexual or sexual reproduction?
The offspring formed by sexual reproduction are genetically different. Asexual reproduction is important as it allows the continuity of genetic information through different generations. Sexual reproduction is important as it brings genetic variation, which allows the evolution to proceed.
What are the causes of variations during reproduction?
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).