When two or more clearly different phenotypes exist in the same population of species, the phenomenon is called?
Correct answer: B. Polymorphism
- A. Replication
- B. Polymorphism
- C. Gene linkage
- D. Gene expression
Explanation
'Polymorphism' means that different shapes and structures exist. 'A' is not the answer because replication is the division of the cell. 'C' is not the answer because Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction. 'D' is not the answer because Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product that enables it to produce end products.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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