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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.
Define the Larval stages of fasciola hepatica? Fasciola hapatica reproduces both sexual and asexually. Cross-fertilization is of common occurrence. Copulation takes place in t
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A substitution mutation occurs in the GRE making it unrecongnizable to the glucocorticoid receptor. What impact would this have on the transcription of the gene downstream of this
These are safe and free of systemic side effects. However, gastrointestinal side effects are common, and compliance is poor. The average LDL decreases by approximately 15 per cent
Are viruses cellular organisms?
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What are the biological troubles that molluscs face due to their soft body? Because molluscs have a soft body they are more fragile. They also have more complexity to support t
Explain Clinical analysis Clinical analysis: This analysis includes a complete physical examination and a medical history. The physical examination begins with the patient's
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