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Tell me which statement belongs to either natural selection, genetic drift, or gene flow Can you tell me if I am correct? -Consistently causes a population to become better adapted to its environment (I said this is natural selection). -Causes allele frequencies to fluctuate randomly (I said this is genetic drift). -Responsible for the founder effect (I said this is genetic drift). -Cannot cause a harmful allele to become more common (I said this is genetic drift). -Can introduce new alleles into a population's gene pool (I said this is gene flow). -A result of the movement of fertile individuals or their gametes (I said this is gene flow). -A result of differential success in reproduction (I said this is natural selection). -Responsible for the bottleneck effect (I said this is genetic drift).
What is a species? A species is a set of living beings able to cross between themselves generating fertile offspring. This concept though does not apply to individuals of ex
THEORIES TO EXPLAIN FINE STRUCTURE OF CHROMOSOME (1 ) Multistranded theory Steffenson 1959 - each chromosome composed of two chromatids (Half Chromosome) and each chromat
Give the Details of Colour Vision The genes for colour sense are located on the X chromosome (recessive inheritance) and on chromosomes 3 and 7. Changes in the cone pigments as
In which meiotic division does the separation of the homologous occur? What are the ploidies of the generated cells after the end of that process? The separation of the homolog
In which environments do bacteria live? Bacteria can be found in various environments throughout the planet. There are bacteria in the air, in fresh water, on the surface, in t
TYPE S OF RIBOSOMES Ribosomes are of two types: - 1 . Procaryotic Ribosomes - 70 s = Occur in cytoplasm of prokaryotes, and also in mitochondria, and Chloroplast o
Define Decreased oxygen availability at high altitude (Hypobaric hypoxia)? The governing biophysical factor at high altitude is decrease in barometric pressure with increase in
Define the Phosphorus - The Macromineral? The body contains about 620 g (20 moles) of phosphorus. Of this 87% is present in bones. It is thus more widely distributed in the bod
Name the source gland of leutinising hormone (LH). State the other hormone along with which it acts on its target cells/organ. Give their two functions.
What are the consumer and producer surplus? Consumer and producer surplus: At equilibrium P 1 Q 1 (as point B, here demand equals supply) Consumer surplus:
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