This definition above refers to the geographic isolation.
It means exactly what it says in the definition - one species is left behind from the rest of the population, and it stays in that particular location, evolving and changing from the species and population it was once a part of.
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The answer is Haploid. Human reproductive cells contain a single set of chromosomes and are known as haploid.
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C. A gen, if present in a pair of alleles, is always expressed
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I believe your answer is B. Sorry if I am wrong.
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The skin helps in the cooling of the body,when there is exess temperature in the body,the skin reduce it and changes it in the form of sweat and also skin acts as a passage of the sweats.