Ap Bio Chapter 24

1. a. Speciation-- The origin of a juvenile species in growing. b. Ana divisorsis-- AKA phyletic phylogeny its the accumulation of changes that gradually a given species into a new species with diverse characteristics c. Clado elementsis-- AKA branching evolution- it is the splitting of a gene pool into two or more(prenominal) classify pools, which to all(prenominal) one give rise to one or more new species 2. -They define species as a population or collection of populations whose members have the potential to interbreed in reputation and kick upstairs fertile offspring but atomic number 18 unable to set about offspring with those in separate populations. They are linked by who they can reproduce with. 3. Prezygotic breastworks to education impede mating or hinder fertilization. Postzygotic hindrances to reproduction continue an organism from developing and/or reproducing 4.

Habitat isolation - populations cost in different habitats and do not meet Prezygotic restriction two populations occupy different habitats Temporal isolation: Prezygotic bar two populations duplicate at different times of the day, month, time or year Behavioral isolation: Prezygotic obstacle versed competition limits chance of mating Mechanical isolation: Prezygotic bar sex organs are incompatible Gametic isolation: Prezygotic breastwork Sperm cannot fertilize egg Reduced loan-blend viability: Postzygotic barrier genes from parents move and do not mix Reduced hybrid fertility: Postzygotic barrier ch romosomes from parents do not match up Hybr! id breakdown: Postzygotic barrier - some first gen hybrids are fertile but cannot mate with original species 5. a. Morphological species concept-Characterizes a species by its body shape, size, and other structural features. It applied to agamic and sexual organisms and can be useful without the information on gene flow. b. Paleontological species concept-Focuses on morphologically discrete species cognize only from the fossil record. many another(prenominal) species are...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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