BIOL 1000 Chapter Notes -Chromosome, Neutral Theory Of Molecular Evolution, United States
Document Summary
Sections 18. 1, 18. 2, 18. 3, 18. 6 (intro, 18. 6a, 18. 6b), 18. 7 (intro, 18. 7a, 18. 7b), and 18. 8 (intro, 18. 8a, 18. 8b, 18. 8c). 18. 1 what"s in the name ? speciation is known as the process of species formation. In this chapter- the concept of species is explored and the mechanisms involved in speciation and appreciate the importance of names of organisms in biology. Communication can affect both inter- and intraspecifc behaviour. The definition seems to work for species that reproduce sexually but it doesn"t make sense for species that reproduce asexually. Androdioesous species: composed of males and hermaphrodites (which produce both egg and sperm. Gynogenetic species - species of only females that go through internal fertilization but still need sperm. They need mechanical stimulation by sperm donated by other male species. Therefore, they have to mate with other species. Hybridization: when species interbreed and produce fertile offspring. When sterile offspring are produced, it doesn"t put them outside the definition of bsc.
