BIOL 11000 Lecture Notes - Lecture 24: Cladistics, Paraphyly, Monophyly

• School: Purdue University
• Department: Biological Sciences
• Course: BIOL 11000
• Professor: Dr.Anderson

Document Summary

Natural sele(cid:272)tio(cid:374) i(cid:374) respo(cid:374)se to i(cid:374)trodu(cid:272)ed pla(cid:374)t spe(cid:272)ies a. Balloon vine is native to florida, fed upon by the native insect, the soapberry bug. Balloon vine has become rare in central fl, and soapberry bugs there feed on introduced goldenrain tree fruit instead. Soapberry bugs feed most effectively when the length of their beak matches the depth of the seeds within the fruit. Goldenrain tree fruit has 3 flat lobes, with seeds closer to its surface than in the round balloon vine fruit. Scientists predicted that natural selection would result in soapberry bugs with shorter beaks in populations feeding on goldenrain tree fruit. Evolution of drug-resista(cid:374)t pathoge(cid:374)s a. b. c. d. e. f. g. h. i. j. k. 1/3 people have staphylococcus aureus on their skin or in nasal passages with no harmful effects. Some genetic varieties of these species (strains) are resistant to the antibiotic methicillin.