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Explain Crossing Over in genetics?
Crossing over is when the arms of homologous chromosomes exchange segments (and therefore genes) with each other. Recall that one of the homologues originally came from the father's sperm and the other came from the mother's egg.
During Prophase I of Meiosis the homologous chromosomes pair up to form a tetrad. The arms of the chromatids overlap, and can sometimes swap portions. This exchange results in a genetic recombination of the parental genes, providing for genetic variation, the raw material for evolution.
What are autotrophic beings? What are heterotrophic beings? Autotrophic beings are those that can make their own food, i.e., that make organic material from inorganic compound
who proposed trinomial nomenclature
Generalised Seizures Generalised seizures are bilaterally symmetrical without focal onset. One subtype, the grand mal attack, is characterised by loss of consciousness and by s
Determine Energy Requirements for Athletes? You are familiar with the fact that body needs' energy to maintain body temperature, to meet metabolic demands, maintain electrolyte
What is the significance of Rhynchocoel? The unique body cavity of the Nemertean worms, which comprise the retractable proboscis. There is some debate on whether this is a true
Q. Explain about ABCC11 GENE? Wax in the external canal of the human ear may be wet or dry. Whether earwax is wet or dry has been traced to a gene called ABCC11, found on ch
Glycerol can act as a substrate for glucose synthesis by conversion to dihydroxyacetone phosphate and an intermediate in gluconeogenesis. In order for citric acid cycle pyruva
Hormones in Metamorphosis of Amphibia In amphibians, the changes that take place during metamorphosis are brought about by hormonal secretions of the thyroid gland. The first
Porifera - Regeneration in Invertebrates Sponges have immense regenerating ability and show two ways of doing so as displayed below. : (a) Regeneration from small segments-
Q. What do you mean by Congenital Long QT Syndrome? There is a rare group of young patients who suddenly pass out due to a spontaneous ventricular tachycardia and often have fa
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