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Mutations are the only kind of variability generating mechanism in prokaryotes and asexually reproducing organisms. But in eukaryotes where sexual recombination occurs, even in one generation there is a marked reshuffling of genes in the chromosomes which amplifies the genetic variability in a population. The kind of variability generated by recombination is tested by natural selection in as many genetic backgrounds as possible and in as short time as possible (say in one generation). Thus one of the greatest and fundamental advantages of sexual reproduction is the generation of variability. Provided the populations are large, even if mutations do not exist, the mechanism of sexual recombination alone would be generating new genotypes for very long time.
what we the strengths and weaknesses of pangenesis theory
Pulsatile Perfusion: Conventional pumps give continuous flow with very little pulsatile property. Pulsatile perfusion is likely to result in better post operative renal and cardi
what are floating plants? detailed information
Explain about the DNA viruses - Carcinogenic? The three DNA viruses found to cause human cancers are EBV, HBV and HPV. What are these? Let us find out. Epstein-Barr viru
Why do you think the energy requirements are different in situations? Well the requirement is dependent on the ways in which the body spends energy. For example in the first c
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Why do fats have thermal isolation properties? Triglycerides are weak heat conductors and in addition they form thick layers of fat tissue when accumulated by the organism. Tha
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What is the difference between homozygosity and heterozygosity? Homozygosity happens when an individual has two identical alleles of a gene, for instance, AA or aa. Heterozygos
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