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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.
Q. How are the three major arthropod classes characterized according to the presence of wings? Arachnids and Crustaceans do not have wings. Most insects have wings.
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What is complete transposition of arteries? Complete transposition of the great arteries (dTGA): The atria and ventricles are connected appropriately i.e., the right atrium dra
Unlike DNA binding domains and dimerization domains, no general structural motifs have since been identified in the activation domains of diverse transcription factors.
Define the Criteria for an Indicator Organism? Following criteria are suggested for an indicator organism: i. It should be suitable for the analysis of all types of water, i
CONCEPT OF NURSING UNIT: Concept in the design and facilities of nursing unit has been changed time to time based on the different categories of patients and peculiarities of
Define the effects of Deficiency of Calcium in the Body? If there is a continued inadequate intake or poor intestinal absorption of calcium, plasma calcium concentrations will
Shift of the phosphate group from carbon 3 to carbon 2 Shift of thephosphate group form carbon 3 to carbon 2: This reversible reaction is catalyzed by phosphoglycerate mutas
Expressed sequence tag (EST) is the short part of DNA sequence of corresponding to the fragment of the complementary DNA (made from the cell's messenger RNA). ESTs have been taken
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