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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.
Q. Elimination of the risk factors - diabetes mellitus? In other words, in diabetes it refers to maintaining of normal body weight, healthy nutritional practice, regular physic
Define Sample Preparation for Haemoglobin Content in Blood Wipe the index finger or middle finger with a cotton swab soaked in spirit. Prick the finger with a lancet op
wolves are predators for hares the wolf population increases what happenes next?
In organisms that have undergone tagmosisthe trunk often develops into two tagma, oneinvolved in locomotion and one that is notlocomotory. The tagma not involved in locomotionis re
Radiographic Evaluation - criteria for endosteal implants Surgical and interventional imaging involves imaging the patient during and immediately after surgery and during the
Fat digestion requires two steps? What are the steps and what enzymes are used to accomplish each step?
ECOLOGY
long ans about types of ovules
Energy Metabolism In the preceding sections of the unit, you studied how the products of digestion of food, viz: amino acids, sugars and fatty acids are absorbed and transport
Define Gonads and Reproductive System? With aging, there is decrease in pituitary hormone secretion causing decrease in gonadal hormone production, which causes number of chang
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