Match the word with the correct definition (2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
adaptation
heritable trait
natural selection
allele frequency
gene flow
Hardy-Weinberg Equilibrium
single nucleotide polymorphism
genotype
competitive advantage
niche
adaptive radiation
evolution
resource partitioning
genetic drift
1. adaptation - A trait that helps an organism survive and reproduce in its environment
2. heritable trait - A characteristic that is passed down from parents to offspring through genes
3. natural selection - The process by which organisms that are best adapted to their environment survive and reproduce more successfully
4. allele frequency - The proportion of a specific allele in a population's gene pool
5. gene flow - The transfer of genetic material from one population to another
6. Hardy-Weinberg Equilibrium - The condition in which allele frequencies in a population remain constant over generations
7. single nucleotide polymorphism - A variation in a single nucleotide that occurs at a specific position in the genome
8. genotype - An organism's genetic makeup
9. competitive advantage - An attribute that allows an organism to outcompete others for resources
10. niche - The role and position of an organism in its environment
11. adaptive radiation - The diversification of a group of organisms into different forms to exploit different ecological niches
12. evolution - The process of change in species over time
13. resource partitioning - The division of limited resources by different species to avoid competition
14. genetic drift - Changes in allele frequencies in a population due to random events or chance
There are four major parts of natural selection according to Darwin. Match the term to the correct explanation. (4 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
There are more offspring born than the environment can support. This results in competition for limited resources in the ecosystem.
There are naturally occurring variations in a population due to meiosis, which creates new allele combinations. Variations can also be introduced by mutations.
Organisms with the most helpful traits that can find resources such as food, water, and mates will survive and reproduce.
Traits are passed from parent to offspring. If these traits are beneficial and help the organism, they will survive and reproduce. These traits are known as adaptations.
1. There are more offspring born than the environment can support. This results in competition for limited resources in the ecosystem. - There are naturally occurring variations in a population due to meiosis, which creates new allele combinations. Variations can also be introduced by mutations.
2. There are naturally occurring variations in a population due to meiosis, which creates new allele combinations. Variations can also be introduced by mutations. - Traits are passed from parent to offspring. If these traits are beneficial and help the organism, they will survive and reproduce. These traits are known as adaptations.
3. Organisms with the most helpful traits that can find resources such as food, water, and mates will survive and reproduce. - There are more offspring born than the environment can support. This results in competition for limited resources in the ecosystem.
4. Traits are passed from parent to offspring. If these traits are beneficial and help the organism, they will survive and reproduce. These traits are known as adaptations. - Organisms with the most helpful traits that can find resources such as food, water, and mates will survive and reproduce.
Sorry here are the options to match with:
Selection
Inheritance and Adaption
Genetic variation
Overproduction and competition
1. Overproduction and competition - There are more offspring born than the environment can support. This results in competition for limited resources in the ecosystem.
2. Genetic variation - There are naturally occurring variations in a population due to meiosis, which creates new allele combinations. Variations can also be introduced by mutations.
3. Selection - Organisms with the most helpful traits that can find resources such as food, water, and mates will survive and reproduce.
4. Inheritance and Adaption - Traits are passed from parent to offspring. If these traits are beneficial and help the organism, they will survive and reproduce. These traits are known as adaptations.
What ecological process is demonstrated by the feeding patters of the finches in the picture?
(1 point)
Responses
Commensalism
Commensalism
Mutualism
Mutualism
Resource Partitioning
Resource Partitioning
Predation
Resource Partitioning
Scientists and doctors have observed that many species of bacteria are no longer susceptible to antibiotics that were once effective.
Which statement explains why some bacteria species are no longer susceptible to certain antibiotics?
(1 point)
Responses
The bacteria learned to avoid the antibiotics.
The bacteria learned to avoid the antibiotics.
The bacteria modified the antibiotics to make them more effective.
The bacteria modified the antibiotics to make them more effective.
The bacteria that survived the antibiotics passed that resistance to future generations.
The bacteria that survived the antibiotics passed that resistance to future generations.
The bacteria that were susceptible to the antibiotics produced a greater number of offspring.
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Researchers studying hummingbirds in the Andes Mountains of Ecuador made several observations:
There are many species of hummingbirds.
The species are not separated by any physical barriers.
Unique hummingbird species are found at different elevations in the Andes.
Which hypothesis is based on these observations?
(1 point)
Responses
Conditions at each elevation favor different hummingbird traits.
Conditions at each elevation favor different hummingbird traits.
All hummingbird species are able to interbreed at every elevation.
All hummingbird species are able to interbreed at every elevation.
Elevation changes cause hummingbirds to develop new methods of transportation.
Elevation changes cause hummingbirds to develop new methods of transportation.
Individual hummingbirds choose food sources based on their preferences for specific plants.
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The sand goby is a small fish found in Europe's Baltic Sea. During mate selection, females overwhelmingly choose males with large body sizes. In some parts of the Baltic, algae overgrowths are causing the water to become increasingly cloudy. In the cloudy water, females have trouble identifying the larger males.
What can you predict will happen if female sand gobies continue to have difficulty identifying large males during mate selection?
(1 point)
Responses
There will be a change in how often genes for large size occur in the population.
There will be a change in how often genes for large size occur in the population.
There will be an increase in resource competition between large and small males.
There will be an increase in resource competition between large and small males.
There will be an immigration of a new sand goby population from a different habitat.
There will be an immigration of a new sand goby population from a different habitat.
There will be a mutation in the genes for eyesight that will improve vision in the females.
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Watch the following video then answer the questions that follow. The video will open in a new window. Be sure to keep both tabs open so you can answer the questions while you watch the video.
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1. The Grants’ study on the island of Daphne Major studied what organisms?
(1 point)
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Question 2
2. Where did the 13 species of finches on the islands come from?(1 point)
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Question 3
3. How did the Grants catch the finches?
(1 point)
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Question 4
4. What features did they measure? (1 point)
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Question 5
5. What happened in 1977 to the island? (1 point)
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Question 6
6. What type of birds were more likely to survive after this event? (1 point)
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Question 7
7. After the El Nino event in 1983, which birds were more likely to survive? (1 point)
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Question 8
8. What keeps different species from mating on the Galapagos islands? (1 point)
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Question 9
Examine the graph. Summarize what happened to the finch population between 1976 and 1978.
(3 points)
In 1976 more finches had a beak depth of
. This was
the drought.
In 1978, after the drought more finches had a beak depth of
.
Question 10
Why did the finch populations change from 1976 to 1978?(1 point)