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According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos Islands? a. Finches dispersed to islands where their beak sizes closely matched available seed sizes b. Different finch populations needed to change in order to survive, so beneficial new traits arose c. Non-heritable variation between individual was important for natural selection to work d. Genetic drift allowed beneficial traits to spread throughout the population e. Seeds are limited resource.
Explain the Principle of alkaline copper reduction method? All sugars which contain a free aldehyde group undergo enolization when placed in hot alkaline solution. This propert
Q. What is the function of mineral salts in the creation of electric tension (voltage) at the cellular level? The electric activity of the cell, for example, in neurons, depend
How are fruits formed? The fecundation in angiosperms triggers the release of hormones that act upon the ovaries. The ovary wall then makes into a fruit that having the seeds.
hydra has what symmetry......radial or biradial????
Q Which is the chordate class considered an evidence of the transition of the vertebrates from the aquatic to the dry land environment? The amphibians are totally aquatic in th
Please consider the phenomenon of bacterial resistance to antibiotics. How did the combination of human advances and basic evolutionary principles lead to this situation? How is it
What kinds of mutation in disease-causing bacteria might make them more dangerous Pathogenic bacteria will become more dangerous to us if mutations make them more virulent or r
Bacillary Dysentery: You have learnt about the diarrhoea in the foregoing sub-section, now let us take for example a child who has loose motion which contains blood and mucus
Q. What do you mean by Echinodermata? You will recall that Pliylum Echinodermata includes spiny skinned animals which are exclusively marine (Gr, echinus : spiny; derma: ski
Explain about the Glycoproteins? Most of the naturally occurring conjugated proteins are glycoproteins. Sugar molecules are covalently bound to them, especially those secreted
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