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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.
#White blood cell has mainly 5 types right? which is Neutrophil,Monocytes,lymphocytes, basophil and Eosinophil? I wwanted to know is phagocytes a white blood cell, if yes then why
write short note on feeding mechanism in holozoic organism
Occurrence of Biotin Biotin occurs in nature very likely in all living cells, although usually in minute concentrations. In animal organs and in yeast, biotin is mainly cont
Insulin Devices - Insulin Pen Insulin pen is an insulin injection system. A pen consists of disposable needle, a vial of insulin and a pen. There are two pen systems replac
what is nuclus
Giemsa stain is a basic stain, thus the major chromagen is positively charged (cation). Why does this stain have an affinity for the bacteria cell wall, and for certain cellular co
#question.bacteria and virus are meet so what happen.
What is Metabolism ? Metabolism is usually defined as the sum of the chemical processes required to sustain life. These processes, called metabolic pathways, are catalyzed by
What is the significance of torsion? An unusual twisting of the gastropod body which has left all members of class with an asymmetric body plan and a U-shaped alimentary tract,
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