(2pts) A postfertilization barrier to reproduction has what result? 
*

•  mutations in genes that control development
•  offspring that fail to develop
•  mechanical isolation of a species
•  gamete incompatibility

(1 pt) What do a butterfly, a tree, and my uncle Fred have in common? 
*

•  they are all members of the same kingdom
•  they are all prokaryotic
•  they are all composed of cells with cell walls
•  their cells have membrane bound organelles
•  none of these

(1 pt) Populations that change due to genetic drift 
*

•  haven”t really undergone evolutionary change.
•  will then be subject to strong sexual selection.
•  have evolved.
•  will soon change back to the original form as a result of natural selection.
•  none of the above

(1 pt) The combination of all traits that allow organisms to survive with the potential to produce viable offspring is called: 
*

•  evolution
•  natural selection
•  fitness
•  biological diversity
•  a mistake

(2 pts) Natural selection: 
*

•  is a process by which nature, through biological and environmental factors, selects the combination of traits best suited to the environment
•  is a random process
•  is the term for selecting the most desirable traits in plants and animals and preserving these traits through selective breeding
•  a & b only
•  a, b, and c

(2 pts) How does polyploidy cause reproductive isolation? 
*

•  it changes the timing of reproduction.
•  it changes instructions for how to make reproductive anatomy.
•  it alters the number of chromosomes in sex cells.
•  it changes the prey preference of the organism.

(2 pts) The Hardy-Weinberg Equation is an important part of the study of inheritance and ultimately, evolution. If their assumptions don”t apply for a specific trait in a population, then what could be a possible consequence? 
*

•  change of allele frequencies
•  geneticists will have to redo all of the Mendelian studies
•  equilibrium
•  spontaneous generation
•  none of these

(1 pt) Evolution that occurs as a result of a dramatic reduction in population size is called 
*

•  founder effect.
•  genetic drift.
•  gene flow.
•  population bottleneck.
•  none of the above

(2 pts) Biological _________ are groups of individuals of the same _________ that are subdivided from other _________. 
*

•  species, population, species
•  populations, species, populations
•  populations, organism, organisms
•  races, populations, races
•  none of the above

(2 pts) Which of the following is NOT a part of the theory of natural selection? 
*

•  individuals in a population vary.
•  some variation can be passed on to offspring.
•  populations produce more offspring than the environment can support.
•  all species are descended from a common ancestor.
•  none of the above

(2 pts) Your friend was diagnosed with strep throat 2 months ago. She was treated with antibiotics for 10 days, but 2 weeks after treatment, the symptoms returned. She was given a different antibiotic and her symptoms improved again, initially, but then got worse. What is happening? 
*

•  your friend has taken antibiotics so long that she has become tolerant to them, making them ineffective.
•  exposure to antibiotics has caused each individual bacterial cell to evolve resistance to the antibiotics.
•  your friend was originally infected with some bacteria that were resistant to these two antibiotics and the bacteria multiplied.
•  your friend probably doesn”t have a bacterial infection. There must be some other reason for her symptoms.
•  none of the above

(2 pts) After a rapid change in climate, one population of bird quickly adapts to the change, but others in the area do not. What could you conclude about the quickly adapting population? 
*

•  they had a greater need to evolve than the other population.
•  they already had some alleles in their genome that were adaptive in the new environment.
•  they reproduced more slowly than the non-adapting population.
•  they had a higher rate of mutation than the other population.

(1 pt) When a population of organisms is evolving, what can you be sure is happening? 
*

•  it”s improving.
•  it”s stable (no change).
•  it”s getting bigger.
•  it”s changing.
•  all of the above.

(2 pts) What would happen if a mutation created a new allele that decreased fitness? 
*

•  the new allele would spread through the population and decrease the fitness of that population.
•  the new allele would decrease the fitness of the individual that possessed it, and that individual would have few or no offspring.
•  the new allele would have to change back to an allele of higher fitness so the possessor of that allele could maintain its fitness.
•  the individual with the new allele would wait for an environmental change so that its fitness would increase again.
•  none of the above

(1 pt) Assortative matings have what effect on populations? 
*

•  they cause one sex to be much different than the other.
•  they cause isolated groups to be more similar to each other.
•  they increase the rate of mutations.
•  they maintain appearance differences between groups.
•  none of the above

(1 pt) Many lines of evidence suggest that human populations aren”t distinct races. What keeps us so similar even though adaptations to local conditions have occurred? 
*

•  members of different populations mate with each other.
•  natural selection has acted in the same way for all groups of humans.
•  populations mate assortatively.
•  sexual selection has acted in the same way for all groups.
•  none of the above.
• Click here to have a similar paper done for you by one of our writers within the set deadline at a discounted…