New version page

O-K-State ZOOL 4133 - Exam 1 study guide

Type: Study Guide
Pages: 4

This preview shows page 1 out of 4 pages.

View Full Document
View Full Document

End of preview. Want to read all 4 pages?

Upload your study docs or become a GradeBuddy member to access this document.

View Full Document
Unformatted text preview:

ZOOL 4133 1st EditionExam # 1 Study GuideLecture 1 (January 13-15)Introduction to EvolutionWhat is evolution? - “descent with modification- “change of inherited traits through successive generations- “interaction between processes that generate and eliminate variation in a population”What areas benefit from studying evolution?- Human healtho Origins of viruses and pathogens- Agricultureo Selective breedingo Learning more about the origins of domestic species- Conservationo Biodiversityo Understanding and predicting the patterns of climate changeWhat are the five predictions of Darwin’s hypothesis for evolution?- Microevolution- Speciation- Macroevolution- Descent from common ancestors- “Life on earth is old”How long does speciation take?- Speciation depends on the individuals involved; it is a process in which total reproductive separation is the stopping pointWhat are some examples of macroevolution?- The fossil record shows that there are structural similarities between some extinct and extant species in the same geographic area. Transitional forms are also another example of macroevolution.What can be seen as evidence for common ancestry?- Homologous structures between various extant species and pseudogenesWhat does radiometric dating help predict?- The age of the earth and fossilsLecture 3-5 (January 20-27)What are Darwin’s four postulates?1.“Individuals within populations are variable2.The variations among individuals are at least partially heritable3.In every generation, some individuals are more successful at surviving and reproducing than others4.Survival and reproduction of individuals is not random; individuals succeed because of thevariant traits they inheritedWhat is the consequence of natural selection?- “the composition of the population changes from one generation to the next. Selection, evolution and populations act on whom?- Selection occurs on individuals, evolution acts across generations, and populations evolveWhat is the definition of Darwinian fitness?- “the extent to which an individual contributes genes to the next generation (lifetime reproductive success)”How is variation generated?- Partial heritability leads to variationWhat are the 4 components of the modern synthesis?1.“individuals vary as a result of mutation, recombination, and sexual reproduction2.Alleles are transmitted to offspring intact3.In every generation, some individuals are more successful at surviving and reproducing than others4.Individuals most successful at surviving and reproducing are those with alleles and allelic combinations that best adapt them to their environment”Lecture 6-8 (January 29 – February 5)MutationWhat are the sources of variation among individuals?1.Variation within the environment2.Environment interactions with genotypes3.“genetic variations”What is the definition of a reaction norm?- “ the range of phenotypes an individual can express under different environmental conditions”What are the four nucleic bases in DNA?- Adenine, guanine, cytosine, and thymineWhat are the sources of new genetic variation and the origin of new alleles?- MutationsLecture 4Selection, mutation and Hardy-WeinbergWhat are the assumptions made by the Hardy-Weinberg equilibrium?1.“no selection2.No mutation3.No migration4.No genetic drif5.Random mating”Class exam review:have to read the textbookhave a calculatorall equations will be givenmay be some multiple choice, but not very likelymath questions posted on d2lo being heterozygous is advantageousWhat does the mutation selection balance explain?- mutation selection balance explains the persistence of deleterious recessive mutations in populations (partially answers)What does the genetic drift do for heterozygosity?- genetic drif overall produces a reduction in heterozygositywhat do we want to know when we ask about linkage?- non-random associations between evolution and lociWhat do frameshift mutations cause?- alters the proteins being read from the nucleotides What are empirical studies used for?- Empirical studies are used to measure mutation rateWhat is the effect of migration on population differentiation?- reduces differentiation between


View Full Document
Loading Unlocking...
Login

Join to view Exam 1 study guide and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Exam 1 study guide and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?