Ap Bio Chapter 24

1. a. Speciation-- The origin of a juvenile species in growing. b. Ana divisorsis-- AKA phyletic growing its the accumulation of changes that gradually a given species into a new species with diverse characteristics c. Clado factorsis-- AKA branching evolution- it is the splitting of a gene pool into two or more shed light on pools, which to from each one 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 ar unable to set about offspring with those in separate populations. They be linked by who they can reproduce with. 3. Prezygotic breastworks to bringing up impede mating or hinder fertilization. Postzygotic hindrances to reproduction prohibit an organism from developing and/or reproducing 4.

Habitat isolation - populations conk out in different habitats and do not meet Prezygotic obstacle two populations occupy different habitats Temporal isolation: Prezygotic roadblock two populations duplicate at different times of the day, month, duration or year Behavioral isolation: Prezygotic bar intimate competition limits chance of mating Mechanical isolation: Prezygotic restriction sex organs are incompatible Gametic isolation: Prezygotic hindrance Sperm cannot fertilize egg Reduced crossbred viability: Postzygotic barrier genes from parents move and do not mix Reduced hybrid fertility: Postzygotic barrier chromosomes fr om parents do not match up Hybrid 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 apomictic and sexual organisms and can be useful without the information on gene flow. b. Paleontological species concept-Focuses on morphologically discrete species know 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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