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Makes up all living organisms and carries genetic information in its nuecleus.


Units of heredity that determines features.


The physical traits that are the result of the gene/genotype and environment; observable characters.


Two alleles for a feature, on a chromosome; the genetic makeup of an organism.

Dominant Allele

The stronger trait or allele.

Recessive Allele

The weaker trait or allele.


A gene in which the alleles are different.,
Term used to refer to an organism that has two different alleles for the same trait


A gene in which the alleles are identical., having two identical alleles for a trait,


Molecule that contains millions of atoms ad carries genetic information.


A specific feature.


Allows a population to reproduce successfully, adapt to its environment and respond to change.

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