Evolution Correct Answer-•Evolution is about change in *proportions* through time
Biological Evolution Correct Answer-•Changes in the *genetic properties* of* groups of organisms* ("populations") over the course of generations
•Often referred to more simply as "*descent with modification*...
ENVS 212 — Exam 1 Questions with Correct Answers
Evolution Correct Answer-•Evolution is about change in *proportions* through time
Biological Evolution Correct Answer-•Changes in the *genetic properties* of* groups of organisms* ("populations") over the course of generations
•Often referred to more simply as "*descent with modification*" or "genetic change over time"
Evolution Within Populations Correct Answer-•Change in *gene frequencies* between generations (e.g. shift in proportion of individuals with dark versus light wing coloration)
Evolution Between Populations (or Species) Correct Answer-•Change in
*proportion* of *genetically differentiated populations* (e.g. shift in proportion of populations with dark versus light wing coloration)
Morphological Diversity Correct Answer-•Why do whales have lungs and snakes lack legs?
•Evolution is the only scientific explanation for many observed anatomical traits
Genetic Diversity Correct Answer-•Why do salamanders have 10x more DNA than humans?
•Human Genome >>~3.2 billion base pairs
•Some Salamanders
>>~120 billion base pairs
Species Diversity Correct Answer-•Why are there so many species of insects?
Medicine Correct Answer-•How do bacteria, viruses, and parasites counter our immune system?
•How do bacteria, viruses, and parasites evolve resistance to our medicines?
Technology Correct Answer-•How do insects evolve resistance to pesticides?
Four Misconceptions Correct Answer-1. *Evolution* and *natural selection* are the *same thing*
2. *Individual organisms* undergo biological evolution
3. *Evidence* for evolution is *limited*, it is only an *unsubstantiated theory*
4. Evolution occurs within species, but it *cannot explain* the *origin of
new species*
Misconception #1 Correct Answer-•*Evolution* and *natural selection* are the *same thing* >>Natural selection is *ONE mechanism* by which evolution occurs, but natural selection and evolution are *NOT one and the same*
>>Evolution is simply *genetic change through time*, to deny evolution
is to deny genetic change occurs
>>But, *MUCH evolution* occurs due to *natural selection*
Misconception #2 Correct Answer-•*Individual organisms* undergo biological evolution
>>*Populations* or *groups of organisms* undergo evolution
>>In biology, the change of individual organisms through their lifetime is termed "*development*"
Misconception #3 Correct Answer-•*Evidence* for evolution is *limited*, it is only an *unsubstantiated theory*
>>*Evidence* for evolution is *abundant*, stemming from numerous sources such as from the *fossil records*, *DNA* and *genomic data*, and *direct observations* in contemporary time
Misconception #4 Correct Answer-•Evolution occurs within species, but
it *cannot explain* the *origin of new species*
>>As for studies within species, there is *abundant evidence* that *NEW species form* via evolution
Development Correct Answer-•The *change* of *individual organisms*
through their lifetime
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R279,53. You're not tied to anything after your purchase.
