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Describe Genetic Recombination ?
Genetic recombination, which provides the variation necessary for evolution, can occur through a variety of processes during cell reproduction: deletion, or accidental loss of chromosome sections; duplications, where portions of homologous chromosomes become attached to a homologue, resulting in duplicated genes; crossovers, exchange of segments of homologous chromosomes that occurs during prophase I of meiosis; inversions, segments that are in reverse order with respect to the rest of the chromosome; and translocations, in which a piece of a chromosome may become attached to another chromosome.
Intermediate filaments - Role of Cytoskeleton Structures These filaments are intermediate in size among microtubules and microfilaments and are 10 nm in diameter. Five classes
Abrasive action of water, ice and wind Water is an important mechanical weathering agent both in liquid as well as in the frozen state. Rain water carrying sediments, ice glac
What is pollen? Pollen grains are the male gametophytes of the phanerogamic (flowering) plants. Thus within the pollen grains the male gametes of these plants are produced by m
Q. What are anticoagulants? What are the practical applications of anticoagulants, like heparin, in Medicine? Ordinarily there are anticoagulants circulating in the plasma sinc
Plot the amount of DNA in the nucleus of spermatogonia from the G1 stage prior to the first meiotic division through the completion of meiosis. Label each of the major stages of th
Q. What are the few examples of the structural function of organic molecules? Organic molecules have a structural function as they are part of cell membranes, organ walls, cyto
Specify the term in detail - Swim bladder. Found in bony fish, this gas-filled chamber is used to main neutral buoyancy. Oxygen in blood is added or removed as required. Swim b
Define Class – Arachnida? The class Arachnida (Arachnida = spider) has terrestrial and few aquatic animals. It includes spider, scorpions and mites. 1. Prosoma bears. six pair
Palynofossil s (Microfossils) - Fossils of planktons, diatoms, unicellular algae (diatoms) and shelled protozoans. (Heliozoans, Radiolarian and Foraminifera). Its finding in s
Pigs This is a sub-acute or chronic infection manifested by abortion, sterility, high piglet mortality and orchitis in pigs. Br. suis causes brucellosis among pigs. It is morph
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