How did Drs. Peter and Mary Grant verify Darwin’s theory of natural selection?(1 point)
by studying a different group of organisms
by assessing changes in another animal trait
by finding new species that adapted to a different environment
by making observations over a long period of time
Connexus Biology Semester 2 Unit 7 Quick Checks
Natural Selection Over Time Quick Check:
1:Epigenetic changes cannot be explained by DNA structure, but genetic changes can.
2:beak morphology of Galápagos finches.
3:A decrease in species abundance.
4:a graph.
Distribution of Traits Quick Check:
1:There are no mutations in the DNA of the population.
2:The recessive phenotype in this population may serve as an adaptation in this environment.
3:No, the population is not in Hardy-Weinberg Equilibrium because the frequencies of alleles have changed over the four generations.
4:The brown color is an adaptation that is being selected by the environment.
5:The number of individuals displaying each phenotype in both the current generation and the offspring.
Heredity and Reproductive Success Quick Check:
1:Independent = Generation and Dependent = Nucleotide Diversity
2:Red pandas in this population have encountered new environmental challenges presented by the increase in deforested land, and this has selected for different adaptations over time.
3:the amount of light each plant receives
4:had the same likelihood to survive and reproduce as his peers.
5:A desert that has existed for millennia.
High Altitude Living Quick Check:
1:more efficient hemoglobin in the blood.
2:altitude sickness.
3:Hotter temperatures during the summer months cause more deaths, and survivors tend to give birth to children that are more resistant to heat.
4:lower oxygen levels.
5:The positive effects outweigh the negative effects in certain environments.
Competitive Advantage Quick Check:
1:Birds with larger beaks were better able to utilize the large seeds.
2:DNA analysis shows that their DNA is almost identical with only minor changes.
3:The diversity in environments on each island provides many opportunities to study how related organisms have adapted over time.
4:The utilization of different resources requires different adaptations, selecting for different traits.
5:Scientists observe the frequency of the different forms of the gene and how it changes in response to the environment.
Evolution of the Influenza Virus Quick Check:
1:Within cultures that rely on milk-producing animals, individuals who tolerated lactose had a survival advantage.
2:Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random.
3:An interferon activates the body’s immune system response to a virus.
4:Slight variations due to mutations in the virus trigger different responses in people.
5:No, because mutated viruses are may be less likely to replicate.
Color and Natural Selection Quick Check:
1:melanin.
2:moving away from the equator
3:the impact of UV radiation on folate and Vitamin D levels in human populations.
4:A change in one variable produces a change in the other.
5:less predation.
Transitional Fossils Quick Check:
1:positive correlation.
2:transitional fossils.
3:The scenario is describing a relationship known as correlation.
4:It is a transitional fossil that shows correlation.
5:natural selection.
I don't know how often they change the answers so just be careful and make sure that the answers are the same.
I really hope this can help someone! Good luck!
The answer is: by making observations over a long period of time
Biology B Unit 7 Lesson 2 Natural Selections Over Time:
1. Which statement is true?
~Epigenetic changes cannot be explained by DNA structure, but genetic changes can.
2. Which animal trait was Darwin's theory of natural selection based on?
~beak morphology of Galápagos finches
3. What is most likely to happen if predators are introduced to an ecosystem with no known predators?
~A decrease in species abundance
4. Which representation of data visualizes potential relationships between variables?
~a graph
5. How did Drs. Peter and Mary Grant verify Darwin's theory of natural selection?
~by making observations over a long period of time
I got an 100% good luck
@Freddy Fazballs is 100/100% she's 100% correct on all of them... did them myself and she's a life savor :) P.S- MAKE SURE TO CHECK THE ANSWERS... some of them look similar so make sure you click the right one.
Dez is correct.
I wonder how we gon pass the star test cuz if u fail tht mf you fail the class :(
Thank you Freddy Fazballs! i like ur username btw UvU
Thank u luna
Thx
@freddy fazballs
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