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biology
| Question | Answer |
|---|---|
| what is the definition of evolution? | A change in a species over time |
| how do you measure evolution? | allele frequencies |
| What is some evidence of evolution? | Fossils, DNA, and embryos |
| What's artificial selection? | When humans cause intentional selection |
| What's natural selection? | When animals adapt to their surroundings and survive |
| what are some of the myths about evolution? | humans came from monkeys. evolution is a theory. evolution cant explain complex organisms. |
| what makes evolution work? | genetic variation natural selection inheritance competition mutations |
| are evolutionary changes always helpful? | no |
| What's the point of evolution? | organisms adapt to their environment as new, heritable traits that help them survive and reproduce are passed on to their offspring |
| what are some examples of evolution? | directional stabilizing vestigial structures homologous structures |
| What is sexual selection? | natural selection arising through preference by one sex for certain characteristics in individuals of the other sex. |
| what is a founders effect? | small group of organisms move to a new habitat and are founders of a new trait that makes up a large part of later population's gene pool |
| What is a vestigial structure? | A body structure in a present day organism that no longer serves its original purpose, but was useful in an ancestor |
| What's an analogous versus a homologous structure? | Homologous structures share a common evolutionary origin and may look different but have similar anatomy. Analogous structures serve similar functions but have different evolutionary origins and are found in unrelated organisms. |
| When did life first appear on Earth? | 3.7 billion years ago |
| what is micro evolution? | Small adaptive changes within a species' gene pool |
| how do we write species names? | binomial nomenclature Never capitalize the species name. Italicize the whole name. Use both genus and species name. The genus name always begins with a capital letter. The specific epithet is written in lowercase. |
| What is a species? | A group of similar organisms that can breed and produce fertile offspring. |
| what are some reproductive barrier? | Behavioral isolation Mechanical isolation Temporal isolation Ecological isolation Gametic isolation |
Created by:
mholland1500
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