Respuesta :

B. genes because genes are the units of inheritance

The correct answer is option B, Genes

Gene is the only physical unit that carries the information regarding the heredity of an individual. Genes are composed of DNA which carry chromosome that carry the traits from parents to the offspring. There traits or allele are responsible for defining each and every characteristics of an individual from color of the skin to the eye color, from height to the hair color etc.

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