What is an animal types Species are developmentally autonomous units transformative autonomy quality stream is sufficie

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What is a species?Species are developmentally free units transformative autonomy

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Slide 1

What is an animal groups? Species are developmentally autonomous units transformative freedom – quality stream is sufficiently low that species can wander How to recognize species? ( 1) morphologically particular ? ? ? doesn't generally work, however once in a while it's all that is conceivable

Slide 2

What is a species? Species are developmentally free units transformative autonomy – quality stream is sufficiently low that species can veer How to recognize species? ( 1) morphologically particular (2) conceptive confinement – inability to hybridize or create ripe or reasonable crossover posterity  affirms absence of quality stream can't generally figure out if bunches are reproductively segregated here and there gatherings may remain unmistakable even with some hybridization Crow half breed zone

Slide 3

What is a species? Species are developmentally autonomous units transformative freedom – quality stream is sufficiently low that species can separate How to recognize species? ( 1) morphologically particular (2) regenerative separation – inability to hybridize or deliver prolific or feasible half and half posterity  affirms absence of quality stream (3) monophyletic bunches - utilizing phylogeny to decide transformative autonomy heaps of work! monophyly – a solitary branch  every single living descendent of a typical predecessor

Slide 5

Tracing transformative history phylogeny – example and timing of developmental fanning occasions ("evolutionary tree") A B C D regular progenitor of C & D normal precursor of A & B basic predecessor of A, B, C, D expanding occurred in the past basic progenitors can't be watched must induce from information

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change after some time Tracing transformative history Evolution = " plunge with alteration " basic lineage - homology relatives ought to be the same as progenitors aside from adjustments proof of advancement may likewise uncover developmental history

Slide 7

Evidence of development homology – quality shared as a result of legacy from basic predecessor illustration: comparability in appendage structure among well evolved creatures

Slide 8

Structural homology Developmental homology Biochemical Homology – similitudes acquired from basic predecessor

Slide 9

Tracing transformative history Inferring phylogenies : homologous attributes may uncover transformative history firmly related species ought to have characteristics in like manner – acquired from their basic predecessor ( homology ) familial – type of the characteristic in the predecessor of the gathering determined – changed type of the attribute

Slide 10

Tracing developmental history Inferring phylogenies : firmly related species ought to have qualities in like manner – acquired from their basic progenitor ( homology ) – useful qualities are shared inferred qualities ( homologies that are not the genealogical state) recognizing shared determined attributes requires deciding: – homologies – tribal versus determined states (bearing of progress)

Slide 11

outgroup – gives data about familial state – roots the tree Which qualities are hereditary ? Which characteristics are inferred ?

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