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| the continuous sequence of changes undergone by an organism from one primary form, as a gamete, to the development of the same form again |
| the seas and atmosphere on earth before the existence of life, primarily containing a mixture of water, hydrogen, methane, ammonia, and carbon dioxide |
genetic ge·net·ic (jə-nět'ĭk) or ge·net·i·cal (-ĭ-kəl)
adj.
Of or relating to genetics or genes.
Affecting or affected by genes, as a disorder or deficiency.
Of, relating to, or influenced by the origin or development of something; ontogenic.