関連する実験動画

Updated: Jul 14, 2026

Assays to Detect UV-reflecting Structures and Determine their Importance in Mate Preference using the Sailfin Molly Poecilia latipinna
06:41

Assays to Detect UV-reflecting Structures and Determine their Importance in Mate Preference using the Sailfin Molly Poecilia latipinna

Published on: September 14, 2016

タナ川の赤いコロブスの間で雌の移転と配偶者の選択

C W Marsh

    Nature
    |October 18, 1979
    PubMed
    まとめ

    雌の赤いコロブス猿は,多くの霊長類とは異なり,集団移転の高い割合を示しています. この研究は,メスの移転が配偶者選択と幼児殺人を回避することと関係があることを示唆し,以前の近親交配の仮説に異議を唱える.

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    関連する概念動画

    Mate Choice01:20

    Mate Choice

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    Fixed Action Patterns01:06

    Fixed Action Patterns

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    Inclusive Fitness00:57

    Inclusive Fitness

    Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
    Types of Selection01:46

    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...
    Hybrid Zones02:29

    Hybrid Zones

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    Testing a Claim about Population Proportion01:24

    Testing a Claim about Population Proportion

    A complete procedure for testing a claim about a population proportion is provided here.
    There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
    The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...