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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.
THORACI C CAVITY - Thoracic cavity is air tight. On dorsal side vertebral column present. On ventral side sternum present. On lateral side 12 pairs ribs present. On p
Efficiency of feed utilization on complete feeds The complete diet concept is based on group rather than individual feeding and usually involves much fewer changes in diet for
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Define Principle behind the functioning of a pH meter? Principle Hydrogen ions in solution, like other ionic species, conduct an electric current. When a glass electrode is dip
What is genotype? What is the difference between phenotype and genotype? The Genotype is the genes, DNA nucleotide sequences contained in the chromosomes of an individual, whic
Effect of processing on mineral content of foods Minerals are comparatively stable under processing conditions such as heat, light, use of oxidizing agents and extremes in pH.
Measurement of solar energy input A variety of instruments have been designed to measure the energy of solar radiations of all wavelengths as well as of a particular range of w
Q. Which Of the substances is chromatin made? Chromatin is made of the DNA molecules associated to proteins known as histones.
Q. Why are vaccines made of the own disease agent or of fragments of it? The goal of vaccines is to artificially induce a specific primary immune response (and the consequent f
Define Tissue Distribution and Regulation of Calcium Concentration? As already discussed, development and preservation of bone mass is quantitatively an important function of c
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