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Female prairie voles do not choose males based on their frequency of scent marking

Stephen G. Mech1, Aimee S. Dunlap, Jerry O. Wolff

  • 1School of Biological Sciences, Washington State University, 99164-4236, Pullman, WA, USA

Behavioural Processes
|March 19, 2003
PubMed

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Natural Selection and Mating Preferences

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Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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The Y Chromosome Determines Maleness

The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
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