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Terms from Ecology Ch. 2


contribution an individual makes to future generations

directional selection

the mean value of a trait is shifted toward one extreme over another

stabilizing selection

favor individuals near the middle of the population mean

disruptive selection

favors both extremes of the population mean


gene that is represented by a capital letter & is expressed if present


gene that is represented by a lower case letter & masked over by the dominant gene


nucleic acid that contains the genetic code for all traits in an organism


section of DNA that codes for traits


gene that contains alelles that are the same


gene that contains alelles that are different


the gene combination of an organism


the physical appearance of an organism


a change in the sequence of DNA

sexual reproduction

reproduction that involve two parents

asexual reproduction

reproduction that involves only one parent

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