BI SC 002 Lecture Notes - Lecture 27: Jean-Baptiste Lamarck, Thomas Robert Malthus
26 Oct 2016
School
Department
Course
Professor
Document Summary
Giraffe that stretches neck to be able to reach the leaves. Competition: struggle for existence, survival of the fittest. Animals are born with differences in: ability, characteristics. These differences could either be: more beneficial to the survival of an individual, less beneficial to the survival of an individual. Variations that make it more likely for an individual to survive: results in being passed on to future generations. Those variations that are unfavorable will gradually be lost. 1) life exists in great abundance: there are thousands of unique species. 2) genetic traits are passed from one organism to the next generation. 3) some individuals in a population survive to reproduce: many do not. 4) a slow and subtle change in organisms takes place over many generations: evidence of phenotypic changes of same species in different locations. 5) the earth is old: there is enough time for slow and gradual changes to make new species. All animals born with genetic differences: characteristics:
