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Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Think about the pattern of human dispersal. Given what you know about the founder effect, would you expect populations native to South America to be more or less genetically diverse than those native to North America?
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- Which of the below best explains why the 14 finch species of the Galapagos Islands are a good example of adaptive radiation? Group of answer choices The 14 finch species originated from 14 different ancestral species that all arrived to the Galapagos over a relatively short time period. The 14 finch species originated over a relatively short time period from a single species. The 14 finch species most likely originated as a result of polyploidy. The 14 finch species on the Galapagos Islands are actually not a good example of adaptive radiation. The 14 finch species evolved their characteristics separately as a result of convergent evolution.arrow_forwardSuppose that global warming causes ocean rise that obliterates most of the Gulf Coast of Florida and much of its human population, and that radiation leaking from the destroyed Big Bend Nuclear Power Station causes a mutation that yields green hair in humans with the homozygous recessive mutant allele. Many years pass and a new island appears in the Gulf. This island is then colonized by an intrepid human population that is fixed for the recessive green hair allele. If the island population grows to 10,000 individuals and then an individual who is heterozygous for the green hair locus arrives on the island and mates with one of the residents, how many generations will it take for the dominant, non-green hair allele to reach a frequency of 99%? (Assume viability selection 20% in favour of the non-green allele and ignore the effects of genetic drift).arrow_forwardHow can a shift in the proportion of genes in a population could lead to the evolution of a new species? Explain why evolution happens to a whole population rather than to a single individual.arrow_forward
- Imagine there's a species of flower that blooms in early April. Some seeds are blown over a mountain and the offspring of those seeds start a new population on the other side. After several million years the mountain erodes and the two flower populations are reintroduced to each other. The population that lived on the far side of the mountain flowers in early May, while the other still flowers in early April. The two populations never hybridize, and become their own species. This is an example of: Gametic Barrier Temporal Isolation O Habitat Isolation O Behavioral Isolation 1.arrow_forwardGene flow describes how genetic differences in individuals change after several generations the net movement of alleles from one population to another by individual migration the genetic diversity in a population from one generation to the next the frequency of alleles changes based on the selective pressure of the environment the plasticity of the gene poolarrow_forwardReproductive isolation leads to induced mutations emergence of separate species immunity to genetic drift high rates of gene flowarrow_forward
- Consider that you are a civilian resident living on the Chatham Island in New Zealand where a long-finned pilot whale stranding event with 100 beached whales is happening and maybe have even been participating in the response to the strandings. Raise specific questions that you may have for the local government or researchers about the stranding. Argue for an alternate hypothesis as to why the event occurred. Use and fully cite in-text peer-reviewed journals and government organizations, to support all data. Then, provide a full reference section at the end to list all the sources usedarrow_forwardIn the model shown below, discuss what kind of geographic barriers would have led to the finch speciation in the Galapagarrow_forwardWhich of the following terms best describes the biological scenario where species that look similar in allopatry look different in sympatry? a. Character displacement b. Tempo c. Fusion d. Post-zygotic barriersarrow_forward
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