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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.
Q. What is the nitrogen waste in amphibian larvae and in the adult animal? The terrestrial adult excretes urea since amphibian larvae are aquatic they excrete ammonia.
General characters of mollusca
Which of the following pairs of events in a human female occur at, or nearly at, the similar time during the menstrual cycle? A. High blood plasma LH levels and ovulation. B
Explain the Process of dna technology Procedures involving recombinant DNA technology has been used to increase the yield of enzymes already produced by the microorganisms, e.
Q. What is structural formula of glycerol? To which organic function do these molecules belong? Glycerol is a linear chain of three carbons, the central carbon is bound to one
Extraradicular Infections Whatever the cause of post endodontic disease we should do proper diagnosis to determine what is the cause; is it intra or extraradicular infection ,
Herbicide tolerant crops (HTC) Increased use of the herbicides plant is tolerant to (describes ecological impact eg toxic residues in soil, runoff into waterways) Ther
Determine the term Memory - Psychological tests The acquisition, reaction, and retrieval of new information is a domain of much importance in infants and young children at risk
what is the necessity of interdependence of a volvox organism in the colonial existence?
Why are salt and sugar used in the production of dried meat and dried fruits? Substances that maintain a highly hypertonic environment, such as sugar and salt, are used in the
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