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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 are the main substances transferred from the mother to the fetus through the placenta? And from the fetus to the mother? From the mother to the fetus the major transferre
Q. Describe the Discovery of the Cell? Ans: The discovery that living organisms are composed of cells was made by an Englishman, Robert Hooke, in 1665. Hooke used the light mic
State the terms - Blastocoel and Blastopore? During the development of embryo, single cells divide and form a hollow ball of cells one cell layer thick. Cavity inside this holl
A person is declared to be dead upon the irreversible cessation of spontaneous body functions; brain activity, or blood circulation and respiration. However, only about 1% of a per
Define Assessment of Magnesium Status and Dietary Requirements? In order to estimate Mg requirements and establish relationship between magnesium intake and deficiency, it is
Explain Transposition the Great Arteries with Ventricular Scptal Defect ? Transposition of the great arteries with VSD is an indication for surgery. It is preferable to do VSD
A calico female has a litter of kitten which includes several calico females a yellow male a couple of yellow females and two black males what is the likely color of the father and
examples of Trinomial nomenclature
Explain the Shear or Moment Diagrams Shear diagram changes by magnitude of the load. Shear is constant along unloaded portions of a beam For a point load, the she
Which of the following is true for a toe motor neuron that excites a toe muscle that moves the big toe in the right foot? A. The cell body of the toe motor neuron is located in
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