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The effect of natural selection on colonies or population favouring one group in preference to other may be referred to as group selection. A group can be the smallest collection of individuals within a population or a colony. Group selection, it must be understood, is distinct from selection among individuals. The fitness of the genotypes between groups may vary within a population. The concept of altruism can be extended to groups as well. A colony consisting of many altruists has better chances of survival than a colony consisting of selfish individuals. Let us take hypothetical situatioii where individuals of a colony, reproduce indiscriminately having no regard for the carrying capacity of the environment. On the other hand, consider a colony of individuals with genes restricting population growth, utilising optimally the food sources of the environment. The selection would essentially favour the latter group and the former may eventually face extinction.
What are plankton, benthos and nekton? Plankton, benthos and nekton are the three groups into which aquatic living beings may be divided. The plankton is formed by algae and
Q. Explain about Celiac Disease? Gluten-sensitive enteropathy or, as it is more commonly called, celiac disease, is an autoimmune inflammatory disease of the small intestine. I
SPERMEIOGENESI S / SPERMETOLEOSIS It is the gradual differentiation of a stationary rounded and undifferentiated spermatid into an active and motile sperm. The spermatids f
Endodontic success - According to Strindberg 1956 the endodontic success is the postoperative clinical as well as radiographic satisfaction after a predetermined postoperative
Which of the following is true for a G-protein? A. After the ATP-ase of the alpha subunit of a G protein converts the ATP bound to the alpha subunit to ADP and inorganic phosph
What are allosteric enzymes? Allosteric regulators can be allosteric inhibitors or allosteric activators. The interaction among an allosteric enzyme and the allosteric inhibito
Tricuspid Excision : For tricuspid valve endocarditis with vegetations in drug users, valve excision is done by removing three cusps and chordae and papillary muscles. Later
Digestion in the Stomach To understand the digestion mechanism in the stomach, it is important to know about the anatomy of the stomach. Look up Unit 6, in the Applied Physio
Explain Ventilation (NIV)? This refers to the use of mechanical ventilatory support without the use of an endotracheal tube. NIV may be by the application of a continuous posit
Q. Write the definition of counselling? Definition of counselling "A process of helping or enabling a person / persons to solve certain interpersonal, emotional problems and
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