Exam (elaborations)
WVU Biology 117 Final Exam Questions with Complete solutions.
- Course
- WVU Bio 117
- Institution
- West Virgina University
WVU Biology 117 Final Exam Questions with Complete solutions.
[Show more]
Content preview
WVU Biology 117 Final Exam Questions with Complete solutionsEvolution Correct Answer-change in the gene pool of a population over time
Population Correct Answer-All the organisms of a particular species living in the same place at the same time
Gene Pool Correct Answer-All the alleles of all the genes in a species or population
Natural Selection Correct Answer-Differential reproduction based on heritable traits
Biological fitness Correct Answer-The ability of an individual to produce surviving, fertile offspring relative to that ability in other individuals in the population
Facts of Natural selection Correct Answer-- requires varied population
-does not create new traits or alleles
-mutations do not occur to solve problems
-adaptations do not occur because organisms want or need them
-evolution is not progressive
-nat. sel. does not change an organism over its lifetime
-does not make perfect organisms -A fitness trade-off is a compromise between traits in terms of how those
traits perform in the environment
Fossil Record Correct Answer--imprints or remains of organisms that lived in the past
-reveals the appearance (and disappearance) of organisms in a historical sequence
Biogeography Correct Answer--the study of the geographic distribution of species that first suggested to Darwin that today's organisms evolved from ancestral
-species in the same area tend to be more closely related to one another
-must also consider Continental Drift
Homologous structures Correct Answer--comparative anatomy reveals this
-similarity due to shared ancestry
-different functions, different shape on outside, BUT similar bones inside
Vestigial traits Correct Answer-similar in structure but no longer functional
Comparative Embryology Correct Answer-early stages of development are very similar
-developmental homology -embryos of vertebrates begin similarly but then develop differently
Molecular biology Correct Answer-studies look to DNA, RNA, and proteins for differences and similarities between organisms to determine how long they may have shared a common ancestor
Anatomy Correct Answer-the study of an organism's physical structure
Physiology Correct Answer-the study of how the physical structures in an organism function
Five causes of Evolution Correct Answer-1. Genetic Drift a. Bottleneck b. Founder Effect
2. Gene Flow
3. Mutation
4. Natural Selection
5. Nonrandom mating (including sexual selection)
Genetic Drift Correct Answer-- any change in allele frequencies in a population due to chance - random with respect to fitness >especially prevalent in small populations
Two cases of Genetic Drift Correct Answer-- Founder Effect
-Bottleneck Event
Bottleneck Event Correct Answer-sharp reduction in the size of a population due to environmental events (such as earthquakes, floods, fires, disease, or droughts) or human activities (such as genocide)
Founder Effect Correct Answer-when a new colony is founded by a small number of individuals -Example: Deafness in Martha's vineyard >37 to 230 times more common than rest of US
Gene flow Correct Answer--genetic exchange with another population
-Immigration
-Emigration
-Examples: Human movement/colonization
Mutation Correct Answer-the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the
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 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 these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Classroom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $23.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75057 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now