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- QUESTION 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 21 The law that states genetic traits are inherited independently of one another is called: O random genetic drift O genetic evolution O genotype O independent assortment QUESTION 22 Which of the following phenomena is the only one that produces wholly new genetic traits? O random mating O genetic drift O gene flow mutation QUESTION 23 New species arise when: O two populations of the same species become reproductively isolated in different environments for a significant period of time O adaptive mutations suddenly occur in the population at an accelerated rate O individuals of two different species interbreed O all of their evolutionary predecessors become extinctQuestion 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
- 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 23 What is the MOST LIKELY explanation for why there is variation in aging across different species? O The strength of selection is determined by aging O Trade-offs only apply to some species O Mutation accumulation theory applies to some species while antagonistic pleiotropy applies to others O Different species suffer different levels of background (i.e., extrinsic) mortalityQuestion 2 Exercse 2 #4 - Why might some light-skinned populations, such as the Japanese, be missing the F374 allele? O Some populations, such as Japanese, are only light-skinned because they avoid tanning. O This allele does not cause depigmentation. O There have been multiple, different mutations that have produced light skin in different populations. O The sampling of Japanese in this study probably did not capture the true incidence of the F374 allele in the population.
- QUESTION 5 For each evolutionary force below, indicate whether it increases or decreases genetic variation (heterozygosity) within and between populations. Does this evolutionary force increase or decrease within population genetic variation? Does this evolutionary force increase or decrease between population genetic variation? Genetic Drift Mutation MigrationQuestion 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 waterQuestion 8 Which of these statements is correct? Genetic variation is not random and natural selection is random. Both natural selection and genetic variation are directed processes. Genetic variation is random and natural selection is not random. Both genetic variation and natural selection are random processes. Natural selection is directed and genetic variation is not directed.
- Question # 17. How does natural selection bring change in gene frequencies?QUESTION 15 Which of the following does not change gene frequencies in populations? selection mutation migration diet O000QUESTION 12 Apopulation is experiencing only selection Allele A1 is favored by selection and starts at a frequency of 03. Which of the following statement(s) islare correct? (Mark al that apply) O The effects of selection will be stronger if the population is small D Allele A1 will go to fixation O Allele At wil change randomly in frequency O Allele A2 is more likely to go to foxation than allele A1 O The effects of solection will be stronger if the population is large