STOCKSCH 100 Lecture Notes - Lecture 28: Brassica Oleracea, International Communication, Prokaryote

• School: UMASS-Amherst
• Department: Stockbridge Sch of Agriculture
• Course: STOCKSCH 100
• Professor: Sarah Berquist

Document Summary

How do you know its different: the definition of a species is a group of organisms that are able to mate successfully and produce viable young, example. Controversy: the origin of species, lots of fossil evidence. Molecular biology: common genes, ho(cid:449)s (cid:449)e"re fro(cid:373) our pare(cid:374)ts a(cid:374)d the sa(cid:373)e prokar(cid:455)oti(cid:272) organism. Variation members within a species exhibit individual differences, and these difference must be inheritable: 2. Overproduction natural populations increase geometrically, producing much more offspring than will survive (not enough natural resources: 3. Competition individuals compete for the same limited (cid:374)atural resour(cid:272)es; dar(cid:449)i(cid:374) (cid:272)alled i(cid:374) (cid:862) truggle for e(cid:454)iste(cid:374)(cid:272)e(cid:863: 4. Adaption those individuals that are best suited (adapted) to the environment will survive and reproduce; this may include cooperation: it works on the individual characteristics, which in turn changes the population. Long periods of time must be available in order to change to a completely difference species; changes are slow: offspri(cid:374)g that i(cid:374)herit the ad(cid:448)a(cid:374)tageous traits (cid:894)(cid:862)fa(cid:448)ora(cid:271)le ge(cid:374)es(cid:863)(cid:895) are sele(cid:272)ted.