BIOL 1202 Chapter : Chapter 24
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Individuals may look alike but not reproduce and therefore are not the same species or. Individuals may look different but can reproduce and therefore are the same species. (see fig. 2: many species were originally distinguished by morphology. Individuals may look similar but not reproduce and therefore are not the same species (see fig. Individuals may look different but can reproduce and therefore are the same species. (ex. 24. 3: reproductive barriers, reproductive isolation is a prerequisite for the formation of species, a barrier prevents two species from producing fertile hybrids, most species have more than one barrier. Geographical isolation: prevents populations from interbreeding but if the species are put together they may mate. Isolation because of where they choose to live: tree top versus forest floor. Temporal isolation: breeding seasons occur at different times. Behavioral isolation: wrong type of mating dance. Mechanical incompatibility: physiological barrier, great dane and chihuahua. Gametic incompatibility or isolation: sperm and eggs are chemically matched.
