Two human populations have been isolated on islands since their ancestors first arrived. The mtDNAs of the people on one of the islands are more varied in sequence than the other. From this information which island would you predict was populated earlier and why?
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- QUESTION 2 Which statement about the genetic basis of races in humans is correct? You are more closely related to all people of your own race than you are to individuals of different races Differences in health outcomes among members of different racial groups are primarily due to genetic differences between these groups Racial differences only account for about 3-5% of genetic variation in humans Different racial groups are separated by hundreds of thousands of years of evolutionQUESTION 5 A forward mutation is O A. a mutation that changes any allele to another allele O B. a mutation that changes a wt allele to a different allele O C. a mutation that can be reversed O D a mutation that moves the organim forward in evolutionQuestion 1 Choose the following scenario that is best matched to the idea of evolution by natural selection. 2% of individuals in a population die in a flood; the population remains large and there is no apparent pattern to the deaths O A group of birds grow to different sizes depending on their diet and their overall size is not heritable. A snowstorm arrives killing smaller birds. Some bears are born with long, sharp claws for digging tubers (roots) out of the ground and eating them. Claw length "runs in families" with some families exhibiting longer claws. A late spring kills off many bears with short claws A person experiences wrinkled fingertips in the water, but they are smooth when not in the water
- Question # 15. Define the synthetic theory of evolution. Write the factors responsible for the evolution.QUESTION 11 You are examining a new population that has recently migrated to and colonized a new island. Which of the following characteristics would you expect to see in your population? a. The new population will likely experience genetic drift related issues related to the founder effect. b. The new population will suffer more the effects of mutation because this is a bottleneck event. c. The new population will have high levels of heterozygosity and allelic richness. d. The new population will most likely have the same allele frequencies as the original population.Question 10 The process of Natural Selection depends on Variability in the traits from one species to another Every member of a species surviving All of the above The environment staying the same over generations Inheritability of the traits withina population
- EVOLUTION ASSESSMENT - FINCHES Galápagos Ground Finches Between 1973 and 1978, the population of ground finches (a type of small bird) on the Galápagos Islands decreased. Scientists made observations of the population throughout that time period. They recorded and graphed differences in the distribution of traits over time. The two sets of graphs below come from the data they collected. Beak Length for Ground Finches Observed in the Wet Seasons of 1973 and 1978 Wet 1973: all finches # of finches 30 # of finches 25 20 15 10 5 0 30 25 20 15 10 5 12-01 0 $4.9 80-84 30.0- 11.5-11.9 Beak Length (mm) Source: inquiryHub 35.0-39.9 40.0-44.9 12.5-12.9 13.0-13.4 13.5-13.9 14.0- Wing Length for Ground Finches Observed in the Wet Seasons of 1973 and 1978 Wet 1973: all finches 65.0 Wing Length (mm) Source: inquiryHub 70.0-74.9 # of finches 75.0- 30 25 # of finches 20 10 5 0 30 25 20 15 O 10 5 0 Wet 1978: all finches 7.0-74 7.5-7.9 80-8.4 85-80 9.0-94 9.5-9.9 10.0-1 30.0-34.9 10.5-10.9 11.0-11.4…QUESTION 1 Why are island chains such as the Galapagos Islands a good place to observe the effects of evolution? Mutation rates are higher on island chains Organisms that live on islands tend to reproduce more quickly The relatively rapid geological changes that happen on islands can create distinct environments where different traits are selected for Living things are not capable of traveling from one island to another SaveQUESTION 3 Darwin's theory of natural selection explains: O The way life began. O The way evolution works at the genetic level. The way dinosaurs became extinct. O That traits within a breeding population that are adaptive to specific environmental circumstances become more numerous in that population over time.
- Question 16 Stabilizing selection acts to change the frequency of one extreme form of a trait reduce the more extreme forms of a trait reduce the intermediate forms of a trait increase the population after a severe population drop increase the more extreme forms of a traitQUESTION 2 Suppose that the population from question #1 (data is in table below) is experiencing inbreeding depression (F=.25) (and no longer experiencing natural selection). Calculate the new expected genotype frequencies (f) in this population after one round of inbreeding. Please round to 3 decimal places. Genotype Number of Flies Adh Adh 595 Adh AdhS Adh Adh Total f'(Adh Adh- f'(Adh AdhS) f'(Adhs AdhS)- 310 95 1000Question # 17. How does natural selection bring change in gene frequencies?