Ready to test your Knowledge?
Try out our new practice tests completely free!
exam preparation banner icon

Biology Now with Physiology

Biology

Quiz 12 :

Mechanisms of Evolution

Quiz 12 :

Mechanisms of Evolution

search
arrow
Insecticides are used to kill insects.However,insecticide-resistant insects are being found.What is the mechanism for this new insect trait?
Free
Multiple Choice
Answer:

Answer:

A

Tags
Choose question tag
close menu
arrow
Evolutionary changes occur when ________ acts upon populations containing individuals with genetic differences.
Free
Multiple Choice
Answer:

Answer:

B

Tags
Choose question tag
close menu
arrow
Two different species may have similar features because of
Free
Multiple Choice
Answer:

Answer:

D

Tags
Choose question tag
close menu
arrow
Disruptive selection operates whenever
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
An example of evolution that has been readily observed is
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Alex is a student with Strep throat (caused by a strain of bacterium)who is given a prescription for an antibiotic and is told to take the drug for two weeks.After a week,he feels better and stops taking the drug.Two months later,Alex again shows symptoms of Strep throat and decides to finish the leftover antibiotic rather than going to the doctor again.Two months after that,he develops Strep throat for a third time and returns to the doctor.This time,the antibiotic does not work.The doctor runs a test and discovers that the bacterial strain Alex is carrying is antibiotic resistant.What most likely happened?
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
New alleles arise by
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Jean-Baptiste Lamark proposed that populations evolve when traits acquired during the lifetime of a parent are passed down to offspring.What is wrong with this proposal?
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
In natural selection,________ that increase survival and reproductive success become more common in a population.
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Two unrelated species evolving to look more similar due to environmental pressures is called
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Convergent evolution occurs when natural selection causes distantly related organisms to
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
When robins lay a clutch of more than four eggs,their chicks are often malnourished because they have so many to feed.If the robins lay fewer than four eggs,they may not have any viable offspring.As a result,robins typically lay a clutch of four eggs.This is an example of
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
The color of a certain species of beetle is determined by a single gene.Two beetles homozygous for green coloration (meaning they have two copies of the green allele)produce a single offspring with brown coloration.Brown color appeared in this offspring as a result of
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Which of the following is true with regard to mutations?
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Several related bird species live in a desert.One species is much smaller than the other species.This small species nests in holes in cacti.Because the bird is so small,it can easily squeeze between the spines of the cactus and create a well-protected nest.This is an example of
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
In a shallow bay,a population of oysters is the food source for the local crabs.The lightest colored oysters blend with the color of the rocks and the darkest colored oysters are concealed in the shadows cast by the rocks.Oysters with an intermediate coloring are easily detected by the crabs and become a tasty meal for them.Over time,fewer and fewer oysters display the intermediate coloring while more oysters are either the lightest coloring or the darkest coloring.This is an example of
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
The population of a cactus species in a particular area has two to seven spines with an average of four spines per square centimeter of surface area.Cacti with fewer than four spines per square centimeter are more easily eaten by the wild boars thriving in the area.Over time,the population of this cactus species in this area have an average of six spines per square centimeter of surface area.This is an example of
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Evolution can be described as
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
When individuals with intermediate values of an inherited phenotypic trait,like head circumference at birth,have an advantage over other individuals in the population,________ is the apparent pattern of natural selection.
Multiple Choice
Answer:
Tags
Choose question tag
close menu
arrow
Which of the following is NOT a mode of natural selection?
Multiple Choice
Answer:
Tags
Choose question tag
close menu
Showing 1 - 20 of 76