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Natural selection can therefore mean differential reproduction among members of the sarne gene pool. We earlier said that selection would promote those alleles that give rise to phenotypes that are better adapted to a given environment. In other words, the frequencies of 'such alleles would tend to increase and those of ill-adapted ones would tend to decrease. What we are sayingis that natural selection is a matter of changes in gene frequencies. Differential reproduction has a dual role to perform. One it leads to or maintains adaptations and therefore determines whether individuals of a population or species will survive; and two, it is a process which determines what changes will occur in the frequencies of alleles in a gene pool of sexually reproducing individuals.
Amoebae - Protozoan Amoebae may be naked or enclosed in tests or shells. The marine, freshwater and parasitic naked amoebae have large commonly tubular lobopodia or fine strap
Q. Outbreak of Staphylococcal food poisoning? Conditions necessary for outbreak of Staphylococcal food poisoning: • Presence of viable staphylococcal bacteria in the food
What is Sex-linked Traits in genetics? The X-chromosomes carry genes for traits other than sex characteristics. Morgan discovered these sex-linked traits while observing the in
The word 'smog' consists of two words 'smoke' and 'fog'. This name was given because Fog in the atmosphere Condense on the carbon particles of smoke to form smog. There are two typ
Define Precautions for Acid Fast Staining? 1. Do not allow carbol fuchsin to dry on heating. 2. Maintain aseptic conditions. 3. Decolourization should be done till no red
Is the biological species concept subjective or objective? How about the phylogenetic species concept or is it subjective or objective?
A "phosphodiester bond" links together: Answer the 3' hydroxyl group and the N9 atom of adenine in ATP. The Phosphate group and N9 atom of adenine in ATP. Sequential nucleosides in
Q. What are the major parts of the human ear? The human ear is divided into three major parts: the external ear, the internal ear and the middle ear.
Wind energy Wind power is one of most cheapest renewable energy sources today. Wind turbines convert the power of wind into electrical energy. Wind occurs due to t
Auxins The history of discovery of auxin is a fascinating chapter in plant physiology. The hormone auxin was discovered first, through some elegant experiments by Charles Darw
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