Last Updated on Jul 06, 2016


X-ray: X-rays possess the properties of penetrating most substances, of acting on a photographic film or plate, and of causing a fluorescent screen to give off light.

Inheritance: The passing of traits from parent to child through genes.

Mortality: The death rate, measured as the number of deaths per a certain population; may describe the population as a whole, or a specific group within a population.

Mutation: Any change in the DNA of a cell. Mutations may be caused by mistakes during cell division, or they may be caused by exposure to DNA-damaging agents in the environment. Mutations can be harmful, beneficial, or have no effect.

DNA: he abbreviation for "deoxyribonucleic acid," the primary carrier of genetic information found in the chromosomes of almost all organisms.

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