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Darwin while evolving the concept of natural selection laid emphasis on competition among individuals belonging to a species, that is intraspecific competition. Here the individuals compete for almost identical requirements from the environment. Competition between individuals belonging to different species, that is interspecific competition is also observed in nature. In the following subsection we shall discuss the essential differences between the two types of competition, and subsequently highlight the role of natural selection in evolving coadapted colnmunities of closely related species.
Preparation - Culture Medium Now that you are familiar with the constituents the preparation of medium is quite simple. Several plant tissue culture media are now available
Natural and Artificial Ecosystem i) Natural ecosystems are those which are mostly free from human disturbances, such as tropical forests, grasslands, oceans, lakes and deserts.
Peste des petits ruminants (PPR) is an acute, highly contagious viral disease of goats and sheep caused by peste des petits ruminants (PPR) virus which belongs to the genus Morbil
Q. What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food? The salivary hydrolase is known as sali
Use of genital herpes in pregnancy Although acyclovir is not approved for treatment of pregnant women, its use during pregnancy has not been associated with an increased risk
Q. What is the part of the female reproductive system where fecundation occurs? Fecundation in general occurs in the Fallopian tubes but it can also take place within the uteru
Q. How does the male gamete penetrate the egg cell? How does the female gamete protect itself from the entrance of more gametes after the entrance of the first sperm cell? The
In an experiment, isolated chloroplast thylakoids were incubated at pH 4.0 with ADP and inorganic phosphate (Pi) added to the medium and then transferred to a medium having pH 8.0.
Q. Explain the Causes of steatorrhoea? The list of possible underlying causes of steatorrhoea includes: • Malabsorption • Malabiorptian of fats in small intestine •
is mismatch repair something different from proofreading?
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