Flashcards in Chapter 16 - Evolution Deck (18):
Study of patterns in the geographic distribution of species and communities
Study of body plans and structures among groups of organisms
Physical evidence of an organism that lives in the ancient past
Person who observed life from a scientific perspecfive
Now-abandoned hypothesis that catastrophic geological forces unlike those if the present day shaped Earth's surface
Change in a line of descent
Line of descent
Theory of uniformity
Idea that gradual repetitive processes occurring over long time spans shapes Earth's surface.
Adaptation (adaptive trait)
A heritable trait that enhances ab individual's fitness in a particular enviornment
Process whereby humans choose traits they favor in a domestic species by selective breeding.
Degree of adaptation to an environment, as measured by an individual's relative generic contributions to future generations.
A process in which environmental pressures result in the differential survival and reproduction if individuals of a population who vary in the details of shared, heritable traits.
Characteristic time it takes for half a quantity of a radioisotope to decay
Method estimating the age of a rock or fossil by measuring the content and proportions of a radioisotope and its daughter elements
Supercontinent that existed before Pangea, more than 500 million years ago.
Supercontinent that formed about 200 million years ago
Theory that Earth's outer layer of rock is cracked into plates, the slow movement of which rafts continents to new locations over geological time.