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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.
Explain the classes of biomaterials When an artificial material is placed in the human body, tissue reacts in a variety of ways depending on the material type thereby, affectin
will argon tend to form bonds with other elements?
why phylum protozoa is called protozoa?
Which of the following is the best definition of the initiation delay that is seen in all organisms? A. Initiation delay is explained as the time it takes for the pre-initiatio
In yeast, a new mutation called suc was recently discovered. The suc mutant cannot use sucrose as a source of carbon, and will not grow if the culture medium contains only sucrose
Define Nutrient and Drug Interaction? Modern medicine has given us many useful drugs that not only prolong and save lives but in fact improve the quality of our lives. Have you
Explain the Drug Effects on Nutritional Status? Drugs can affect nutritional status in a number of ways i.e. by enhancing excretion of certain nutrients, by interfering with nu
Explain Infants and Preschool Children Growth? In this unit we will be studying about one of the crucial phases of human growth and development i.e. infancy to preschool years.
Q. What are the functions of glucagon and insulin for the blood glucose control? Glucagon increases insulin and glycemia reduces it. They are antagonistic pancreatic hormones.
What is cloning? The Cloning is the making of an organism genetically identical to another by means of genetic engineering. The foundation of cloning is the nucleus transpla
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