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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.
Define Types of Root Canal Perforations According to location According to location (level) in relation to crestal bone): Coronal perforation: (supragingival) coronal to
Q. What are some factors that can lead to protein denaturation? Protein denaturation can be caused by temperature variation, pH change, changes in the concentration of surround
The effect of natural selection on colonies or population favouring one group in preference to other may be referred to as group selection. A group can be the smallest collection o
What is an ecosystem? An ecosystem is the system that composed of biotic and abiotic factors in interaction.
Define about the Listing Plane Listing proposed that only horizontal movements of the eye are performed around a vertical axis in the equatorial plane and vertical moveme
Chiropterophily - Cross-pollination Pollination brought about by bats is called cheiropterophily. Bats which feed at night and do not see very well, are frequent pollinators i
COMMUNITY If you look around yourself you will notice that populations of plants and animals seldom occur by themselves. The reason for this is quite obvious. In order to survive
Complications of Phototherapy i) Insensible water loss: There is increased insensible water loss in infants undergoing phototherapy. ii) Gastrointestinal effects: Photot
Q. What are nerves? Axons extend all through the body inside nerves. Nerves are axon-containing structures presenting many axons and covered by connective tissue. The nerves co
What are Flavonols and Flavones? These are the most widely distributed among the flavonoids. The most commonly occurring are Quercetin, Myricetin and Kaempferol. Quercetin is q
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