structures without a purpose such as appendix, skink legs, or tailbone.
What are vestigial structures?
100
Organisms meet but cannot mate after physically separated for a long time. Separation leads to separate gene pool; separation of two populations by a mechanism that prevents interbreeding
What is reproductive isolation?
100
The ability of an organism to survive and reproduce in its environment.
What is fitness?
100
According to _______________ principle of common descent, species have descended from a common ancestor.
Who is Darwin?
100
Scientists who specialize in the study of fossils are called
What is a Paleontologist?
200
Structures with similar parts but different functions: human arm, bat wing, foreleg of a dog
What are homologous structures?
200
Populations are separated by barriers such as rivers, mountains, or bodies of water in
What is geographical isolation?
200
Define evolution in GENETIC terms
What is The change in the relative frequency of alleles in a population over time?
200
This scientists thought organisms acquired traits during their lifetime and passed them down. This is how he explained change over time.
Who is Lamarck?
200
Relative dating determines the relative age of fossils according to
What is what layer of rock they’re found in
300
Early in development, they look similar and point toward a common ancestor: chicken, tortoise, rat, etc.
What are embryological similarities?
300
A female bird develops a preference for males who can perform a particular song. This is an example of something that could lead to
What is Behavioral Isolation
300
When a SMALL population evolves due to chance.
What is genetic drift?
300
He went on the Beagle for several years as a companion to Captain Fitzroy. He ended up figuring out Natural selection and evolution.
Who is Darwin?
300
In Radioactive dating, scientists calculate the age of a samle based on the amount of remaining radioactive __________ it contains.
What is isotopes (or atoms)?
400
chimpanzees and humans have 98% the same ____, pointing toward a common ancestor. Scientists study ______ to see what organisms are most closely related.
What is DNA
400
Two or more species that breed at different times of day, season, or year (Red legged toad breeds January - March, yellow legged toad breeds March-May)
What is Temporal isolation?
400
Members of the same ______ must be able to reproduce and produce fertile offspring.
What is a species?
400
He suggested that Babies are born faster than people die. The human population would grow too fast and there would be insufficient living space and food for everyone.
Who is Malthus?
400
You found a fossil, and were told that the fossil only has 1/16 of the original Carbon-14 remaining in it. Knowing that the half-life of Carbon-14 is 5730 years, how old is the fossil?
What is 22920 years?
500
Examples of this include Darwin's Finches on the various islands, Wallace's Line between Australia and the Orient where Marsupials were on one area and Apes were on another, or the Beaver and the Capybara (each adapted to their environment)
What is Geographical Distribution of Living Species or Biogeography
500
6 Steps involved in Finch speciation?
What is Founders arrive, Separation of Populations (geographic isolation), Changes in gene pool, Reproductive isolation, ecological competition, Continued evolution
500
occurs when individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve
What is directional selection?
500
Darwin said 4 conditions must be present in order for natural selection to occur. They are
What is Variation, Competition for limited resources, Overproduction of offspring, and Survival of the fittest.
500
Darwin discovered a fossil similar to the living armadillo of South America. This fossil indicated to Darwin that some living things have gone extinct. What fossil did he find?