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Inclusive Fitness00:57

Inclusive Fitness

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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.
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Altruism01:03

Altruism

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Altruistic behaviors are “unselfish” behaviors—those that help another individual at the expense of the individual carrying out the behavior. Despite the negative consequences for the altruistic animal, these behaviors are thought to have evolved for several reasons.
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Monohybrid Crosses

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Overview
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Relationship with Other Adult Family Members and Siblings01:29

Relationship with Other Adult Family Members and Siblings

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Other adult family members and siblings play a crucial role in shaping children’s social and emotional development. While parents or primary caregivers are often the central figures in early attachment and socialization, other adults in a child’s life, such as grandparents, aunts, and uncles, can significantly influence developmental outcomes. These influences depend on each adult’s personality and may help compensate when a primary caregiver is emotionally distant or...
283
Phylogeny01:23

Phylogeny

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Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
47.2K
Predator-Prey Interactions02:39

Predator-Prey Interactions

17.2K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
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Updated: May 1, 2026

Robotic Sensing and Stimuli Provision for Guided Plant Growth
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Robotic Sensing and Stimuli Provision for Guided Plant Growth

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植物学.植物学. 从利他主义的兄弟姐妹那里获得模式提示.

Martin Bayer1

  • 1Department of Cell Biology, Max Planck Institute for Developmental Biology, 72076 Tübingen, Germany.

Science (New York, N.Y.)
|April 12, 2014
PubMed
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No abstract available in PubMed .

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