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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.
a) Mention the main cause of air pollution in metro cities. Write any three ways by which it can be decreased. b) How did Eli Lilly synthesize the human insulin? Mention
Nature and Distribution of Viruses Although several infectious diseases of animals and plants had been found to be caused by viruses during early 20 th century, the true natur
Signify the term - Analogy, Analogous? Refers to structures that do not have the same evolutionary origin but have the same functions. The wings of a bat and insect are analogo
Describe the DistaE Dissection Techniques of Surgery? DistaE Dissection (De Bakey Type ZII or Stanford Type B) : Techniques of Surgery : The approach is through a left p
What is Intracardiac Repair of Tetralogy of Fallot ? Technique : The essential steps are: (I) relief of right ventricular outflow obstruction, and (2) closure of ventricular
Q. Why is the sun the "motor" of the water cycle? The sun can be considered the motor of the water cycle for the reason that upon its energy the transformation of liquid water
Determine some Methods of Blood Glucose Estimation? The various types of methods for estimation of blood glucose can be grouped under two groups: a) Chemical methods b) E
Explain of Functional property Browning/Flavour/ Aroma Mode of action Proteins contribute to browning by reacting with lactose and other reducing sugars present in a form
State four characteristics of an efficient respiratory surface. Four characteristics of an well-organized respiratory surface are: a) thin epithelium, b) large surface ar
Byproducts of low digestibility and low nitrogen Straws, husks, pods and haulms are the byproducts of this category. Very often the nitrogen content in these byproducts is so l
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