Natural Selection 1
antibiotic resistance
Which best describes the role of mutations in natural selection?
A mutation may result in a beneficial trait that makes an organism more likely to survive and reproduce
What is antibiotic resistance in bacteria an example of?
a. Evolution through natural selection
b. artificial selection
a. Evolution through natural selection
What are some factors that influence a persons microbiome.
diet, lifestyle, hygiene, antibiotic exposure, age
Why did some people survive the Black Death while others did not?
a. everyone had the same chance of surviving
b. some people had a genetic trait that made them less susceptible to the disease
b. some people had a genetic trait that made them less susceptible to the disease
The difference between a moth's wings is an example of what?
Variation
Cooperation works best only if everyone cooperates.
True or false
True
Why is competition important for natural selection?
It shows which variations are more successful, allowing the organisms with those variations to survive.
What happened to the population of light and dark pocket mice after a volcanic eruption?
a. Dark-colored mice were more likely to survive because they were able to better camouflage on the dark lava rocks
b. all mice turned light-colored to blend in with the rocks
a. Dark-colored mice were more likely to survive because they were able to better camouflage on the dark lava rocks
Define the term competition in an ecosystem. Provide an example of how two species might compete for the same resources.
Animals compete for food, water and space to live. For example, plants compete for sunlight, animals that eat the same prey also compete for food.
All organisms display some type of cooperative behavior.
true or false
true
Evaluate the claim that natural selection favors dark-colored pocket mice in areas with volcanic lava rocks.
Provide evidence to support this claim.
The dark-colored mice blend in with the dark rocks, making them less visible to predators.
What happens to the frequency of a trait in a population if it provides a survival advantage in a changing environment?
a. the trait will decrease in frequency over time.
b. the trait will increase in frequency over time.
b. the trait will increase in frequency over time.
How does genetic variation within a population contribute to the process of natural selection?
Genetic variation within a population allows natural selection to occur by providing a range of traits for the environment to "select" from
All organisms are born knowing how to cooperate
true or false
What is predation?
an ecological relationship in which one species, the predator, feeds on and often kills another organism, the prey.
What is the microbiome and why it is important for human health?
In your own words explain natural selection, provide an example.
a process where organisms with traits that better suit their environment are more likely to survive and reproduce. Ex: after the industrial revolution, the dark peppered moth were more likely to survive. Ex #2: After the volcanic eruption, black mice were more likely to survive. Ex #3: During the black plague people with the ERAP2 gene survived.
All mutations are dangerous.
true or false
false- most of the time mutations have no affect on the organism
What eventually happens to a species when the environment changes and the organisms do not adapt?
Extinction