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Explain about the Serengeti Ecosystem?
The Serengeti ecosystem, one of the most stunning biological communities in the world, was devastated by the introduction of rinderpest from central Asia in the late 19th century. The cascading influences of lowered ungulate population sizes permanently changed the vegetation structure of east Africa, and may have made conditions more suitable for the invasion of tsetse fly vectors of sleeping sickness, further modifying the biological and human communities of the region. Even though these historical effects are still not totally worked out, it is clear that rinderpest that like the related measles virus is subject to extreme "boom and bust" dynamics, could not keep itself within the diverse community of wild ungulates in the Serengeti, but instead was maintained by stable populations of domestic cattle surrounding the wild herds. Along with the development and successful deployment of rinderpest vaccine in domestic cattle, the rinderpest epidemic has been brought within control and ungulate herds have risen to near historic levels, even though some community-level influences of disease may be permanent.
Explain the DNA Hybridisation? This technique is used to study or compare the genetic affinity between two organism. In such studies the deoxyribonucleic acid (DNA) of both org
Gill slits are the opening or the clefts between the gill arches in the fish. Water taken in by the mouth passes through the gill slits and bathes the gills. It also has rudimenta
Particulates: These are suspended droplets, solid particles or mixture of two. So all the atmospheric substances that are not gases are called particulates. A number of term
Braxy The causative agent of braxy is Cl. septicum. It usually affects lambs. The agent is a normal inhabitant of soil and is frequently found in the faeces of herbivores. Bra
PLASMODESMATA Termed by Tangl & Strasburger. Cytoplasmic / Protoplasmic bridges between 2 adjacent cells. Desmotubules connects the E.R. of 2 cells. Plasmodesmata p
Explain about the Freezing - method of food preservation? Freezing (-18°C to - 40°C): In freezing, water in food turns into ice and makes unavailable for reactions to occur, an
Ask quesIn Cross 1, pure-breeding colored, starchy kernel plants (C1Wx/C1Wx) were crossed to plants pure-breeding for colorless, waxy kernels (c1 wx/c1 wx). The F1 of this cross we
Explain Indications of Root-End Filling (REF) Retrofilling a. Persistent periapical pathosis resulting from an inadequate apical seal that cannot be corrected nonsurgically,
Which of the following is not needed for C to U deamination during RNA editing? A. Formation of localized segments of double stranded RNA. B. The 5' and 3' efficiency elemen
Q. From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer? Blood cells have a mesodermal embryonic origin and other organs
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