Exam 12: Evidence of Evolution

Matching These statements ask about the various theories that were presented in an attempt to explain the new information discovered during the 19th century. Match the theory with the description. -Species represent links in a chain leading toward perfection. A)catastrophism B)evolution C)theory of uniformity D)great chain of being

If the ¹⁴C to ¹²C ratio present in a fossil is 25% of that in living organism, how many years have passed since this fossilized organism died?

These statements ask about a perception or line of thought associated with various researchers throughout history. For each description, select the best choice from the following naturalists. -​Lyell A)natural selection B)gradual formation of Earth's features C)great chain of being D)catastrophism E)evolution occurs by inherent drive for perfection F)human will produce more offspring than the food supply can support

Lyell's theory of uniformity proposed that ____.​

Which condition favors fossilization?​

Master genes that affect development tend to be highly ____; therefore, similarities in patterns of embryonic development reflect shared ancestry that can be evolutionarily ancient.​

Which factor influences radioactive decay?​

Scientists have determined that this crater was created by a(n) ____. ​

The study of the body structures of the ostrich, emu, and rhea shown here is an example of ____.

Finding an abundance of iridium in the K-Pg boundary sequence worldwide pointed to evidence that this layer was of ____ origin.​

Which type of fossil is considered a trace fossil?​

Based on the structural similarity of vertebrate limbs, we can conclude that these structures are examples of ____.​

How are fossils older than 60,000 years dated?​

All vertebrate embryos have _____ at some point during embryonic development, indicating a common evolutionary ancestor.​

An asteroid impact on Earth is often associated with the formation of ____.​

These statements ask about a perception or line of thought associated with various researchers throughout history. For each description, select the best choice from the following naturalists. -​Darwin A)natural selection B)gradual formation of Earth's features C)great chain of being D)catastrophism E)evolution occurs by inherent drive for perfection F)human will produce more offspring than the food supply can support

When a certain form of a trait increases the fitness of the individual, this allele will tend to ____ over time.​

Which early naturalist is known for describing nature as a continuum of organization?​

The radioactive decay of an isotope can be best compared to a ____.​

​Fossil evidence of ____ would be found in the deepest layers of Earth.