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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.
What is the carbon cycle? The carbon cycle shows the circulation and recycling of the chemical element carbon in nature as a result of the action of living beings. Photosynt
Metals and Alloys in alloplastic implant materials Most of the dental implant systems are made of metals or their alloys. Currently commercially pure titanium and its alloy Ti-
Animal Fats This group consists of depot fats from domestic land animals (e.g., lard and tallow), all containing large amounts of C16 and C18 fatty acids, medium amounts of uns
a) What process is responsible for the movement of carbon dioxide into a leaf? b) In what conditions might the same process cause oxygen to enter a leaf? (a) Diffusi
Q. Why are transgenics considered a threat to the environmental safety? The Transgenics can be dangerous to the whole biosphere since the transfer of genes between species may
Features of the Gastrulation The significant features of the gastrulation are: a) Proteins of many new types that were not present in the egg or blastula begin to be synthe
Complete history taking is an initial step in diagnosis. You will ask the patient about present complaints, past history, family history, any drug allergy and also the kind of diet
How can proteins be classified? Give suitable examples. Proteins can be classified based on: Shape and size: fibrous or globular proteins. Functional properties: I
In this session's discussion board provide links to the nutrition information for 2 products. The nutrition information should be the type you find on the side of a food product th
Structures that l pyramidenaform the r
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