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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 do you understand by Dimorphic nuclei? Organization of the nuclear material typical of ciliates. There is always a single small micronucleus and either one large or many m
Q. What are the three major types of passive transport? The three main types of passive transport are simple osmosis, diffusion and facilitated diffusion.
Jackson Coleman and Fischer Theory Jackson Coleman Theory: During accommodation the ciliary muscle contraction causes an anterior thrust of the vitreous. This vitreous thrust p
S m o k in g of Meat Products The purpose of smoking meat is to develop a distinctive flavour, aroma and appearance. These attributes can also be achieved with liquid smok
What are infructescences, pseudofruits and parthenocarpic fruits? Infructescences are aggregated fruits created from inflorescences, aggregated flowers. Grape clusters are inst
Where would a predicted silent mutation have to be situated to actually result in a loss-of-function mutation (and potentially lead to the onset of disease)? A. Intron-exon jun
SIMILARITIE S BETWEEN APES AND MAN - Absence of tail. Broadened chest due to flattening of sternum Smaller lumber region due to reduced number of lumbar vertebrae
Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell? Ans) This is an interesting problem of biological evolution. The most accepted hypothesis
Vitamin E (DL-α-Tocopherol) DL-α-Tocopherol is a yellow to red-brown, clear, viscous oil almost without odour which decolourise when exposed to light and air. DL-α-Tocopherol
Define some features of Penicillium? The identifying features of Penicillium are: 1. Mycelium consists of colourless, septate and branched hyphae, some of which grow inside
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