Ap Bio Chapter 24

1. a. Speciation-- The origin of a juvenile species in growing. b. Ana divisorsis-- AKA phyletic organic evolution its the accumulation of changes that gradually a given species into a new species with diverse characteristics c. Clado cistronsis-- AKA branching evolution- it is the splitting of a gene pool into two or more(prenominal) weaken 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 personality and kick upstairs fertile offspring but be unable to set about offspring with those in separate populations. They ar linked by who they can reproduce with. 3. Prezygotic breastworks to counterpart impede mating or hinder fertilization. Postzygotic hindrances to reproduction counter an organism from developing and/or reproducing 4.

Habitat isolation - populations plump in different habitats and do not meet Prezygotic wall two populations occupy different habitats Temporal isolation: Prezygotic restraint two populations duplicate at different times of the day, month, appease or year Behavioral isolation: Prezygotic restriction informal competition limits chance of mating Mechanical isolation: Prezygotic bar sex organs are incompatible Gametic isolation: Prezygotic parapet Sperm cannot fertilize egg Reduced cross viability: Postzygotic barrier genes from parents move and do not mix Reduced hybrid fertility: Postzygotic barrier chromosome s from parents do not match up Hybrid break! down: 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 agamogenetic and sexual organisms and can be useful without the information on gene flow. b. Paleontological species concept-Focuses on morphologically discrete species cognise 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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