Ap Bio Chapter 24

1. a. Speciation-- The origin of a jejune species in growing. b. Ana divisorsis-- AKA phyletic onto factorsis its the accumulation of changes that bit by bit a given species into a new species with diverse characteristics c. Cladogenesis-- AKA ramification evolution- it is the splitting of a gene pool into two or more(prenominal) give pools, which to separately one give face-lift to one or more new species 2. -They define species as a population or collection of populations whose members have the possible to interbreed in record and kick upstairs full-bodied offspring but argon unable to set rough offspring with those in separate populations. They ar linked by who they can reproduce with. 3. Prezygotic breastworks to procreation impede mating or hinder fertilization. Postzygotic hindrances to reproduction hamper an organism from developing and/or reproducing 4.

Habitat isolation - populations rest in disparate habitats and do not meet Prezygotic restraint two populations occupy different habitats Temporal isolation: Prezygotic breastwork two populations duplicate at different times of the day, month, assuage or year Behavioral isolation: Prezygotic barricade sexual opposition limits chance of mating Mechanical isolation: Prezygotic hindrance sex organs are incompatible Gametic isolation: Prezygotic barrier Sperm cannot fertilize egg trim down hybrid viability: Postzygotic barrier genes from parents collide with and do not mix lessen hybrid fertility: Postzygotic barrier chromosomes from parents do not hold in up Hybrid breakdown: Postzygotic barrier - some first gen hybrids are fertile but cannot pair off with original species 5. a. Morphological species concept-Characterizes a species by its body shape, size, and another(prenominal) structural features. It applied to parthenogenetic 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 a(prenominal) another(prenominal) species are...If you want to get a full essay, order it on our website: Orderessay

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