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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.
Bone Density The compact bone surrounding dense evenly spaced trabeculae with small cancellous spaces is ideal/suitable for implant placement. Dense or porous cortical bone is
Alterations occurring in meat and poultry Meat, as you already know, is rich in proteins and contains most of the essential amino acids. It is also rich in minerals such as c
Define Food Components Other Than Essential Nutrients? In the previous units so far, we have read about the six major nutrients, which are essential for us. Though these vary i
What are the chemical substances formed by water photolysis? What is the destination of each of those substances? Free electrons, hydrogen ions and molecular oxygen are liberat
Promoters The promoter region contains the DNA sequences that allow the formation of the transcription initiation complex that give the specificity of expression. Promoters are
If a large volume of fluid has shifted from the blood into the peritoneal cavity, how would this affect blood volume and hematocrit?
Q. with no saturation of transport proteins and under the same concentration gradient how can the speed of simple diffusion is compared to the speed of facilitated diffusion? T
ornamental fishes of india
Q. Is the ventricle lumen larger during diastole or during systole? During diastole the opposite occurs. The muscle fibers of the ventricles relax and the lumen of these chambe
Tricuspid Stenosis : Acquired tricuspid stenosis is most often due to chronic rheumatic carditis. Rarely could it be due to right atrial tumors or carcinoid syndrome producing mi
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