Biology 1001A Chapter Notes - Chapter 18: Gel Electrophoresis, Gynoecium, Conservation Biology

• School: Western University
• Department: Biology
• Course: Biology 1001A
• Professor: Beth Mac Dougall- Shackleton

Document Summary

*prof note: a brief overview of the five different agents of microevolutionary change. Make sure you know these five agents, discussed in detail in the rest of this section. A mutation is a spontaneous and heritable change in dna they"(cid:396)e rare events. *prof note: recall: the difference between dna damage and a dna mutation. A mutation can be a major source of heritable variation because it creates entirely new genetic variations. For most animals, only mutations in the germ line (aka. the cell lineage that produces gametes) are heritable. In plants, mutations may occur in meristem cells which eventually produce flowers & nonreproductive structures. In such cases, a mutation may be passed to the next generation and ultimately influence the gene pool. Mutatio(cid:374)s a(cid:396)e (cid:272)lassified (cid:271)ased o(cid:374) thei(cid:396) effe(cid:272)t o(cid:374) a(cid:374) o(cid:396)ga(cid:374)is(cid:373)"s fit(cid:374)ess. Deleterious (cid:373)utatio(cid:374)s alte(cid:396) a(cid:374) i(cid:374)di(cid:448)idual"s st(cid:396)u(cid:272)tu(cid:396)e, fu(cid:374)(cid:272)tio(cid:374), o(cid:396) (cid:271)eha(cid:448)io(cid:396) i(cid:374) ha(cid:396)(cid:373)ful ways. *prof note: not all deleterious mutations are lethal!