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24 Cards in this Set
- Front
- Back
two species of frogs are mated in the lab and produced viable but sterile offspring
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reduced hybrid fertility, postzygotic
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two species of sea urchins release gametes at the same time, but no cross fertilization occurs
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gametes isolation, prezygotic
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two orchid species eith different length nectar tubes are pollinated by different moths
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mechanical isolation, prezygotic
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two species of mayflies emerge during different weeks in spring
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temporal isolation, prezygotic
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two species of salamanders will mate and produce offspring, but their offspring are sterile
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hybrid breakdown, postzygotic
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two similar species of birds have different mating rituals
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behavioral isolation, prezygotic
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embryos of two species of mice bred in the lab usually abort
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reduced hybrid viability, postzygotic
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peepers breed in woodland ponds, leopard frogs breed in swamps
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habitat isolation, prezygotic
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biological
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reproductive isolation
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morphology
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atomical differences, most commonly used
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ecological
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unique roles in specific environments
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pluralistic
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both reproductive isolation and ecological niche
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genealogical
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unique genetic history gives each species a set of unique genetic markers
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allopatric speciation
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when two populations are geologically separated
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sympatric speciation
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biological barriers prevent gene flow between overlapping populations
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autopolyploid
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has more than two sets of chromosomes that have all come from the same species
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punctuated
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small burst of change, no pattern
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allometric growth
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the differing rates of growth of various parts of the body, leads to the final shape of the organism
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paedomorphosis
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is the retention in the adult of juvenile traits of ancestral organisms due to genetic changes of speeds
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heterochrony
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the evolutionary change in the rate or timing of development
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exaptation
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structures that evolved and functioned in one setting and were then Co-opted for a new function
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species selection
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the species that last the longest and speciate the most often will determine the direction of evolutionary trends
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cladogenesis
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most biological diversity
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anagenesis
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nonbranching evolution
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