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9th grade science PRS


threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next


A segment of DNA on a chromosome that codes for a specific trait


one of the alternative forms of a gene that governs a characteristic, such as hair color


an organism that has two identical alleles for a trait


term used to refer to an organism that has two different alleles for the same trait


trait that will show up in an organism's phenotype if gene is present


The inherited characteristic often masked by the dominant characteristic and not seen in an organism.

Gregor Mendel

the father of genetics

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