Cite evidence that suggests that all modern humans arose from one common ancestor located in Africa.
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Where modern humans arose is still being debated. Some scientists believe modern humans arose separately in three different areas of the globe, which explains the origins of the three major races of humans. Other scientists feel that modern humans arose out of Africa and then spread throughout the world, mating with Neanderthal groups. This also explains the differences seen among the races. A third idea has recently been supported by mitochondrial DNA evidence. This hypothesis suggests that modern humans all arose in Africa and spread throughout the world, replacing other groups rather than interbreeding with them. Even more recently, chromosome fragments have been analyzed, lending more support to the "out of Africa" hypothesis.
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Which of the experiments below would provide the best data set with which to test the hypothesis that female chimpanzees have a greater influence on the vertical transmission of culture than males?
A. Measure the amount of time that young chimps spend with each of their parents, and measure the rate at which they acquire cultural traits. B. Measure the amount of time young chimps spend with their mother only, and measure the rate at which they acquire cultural traits. C. Measure the amount of time young chimps spend with their father only, and measure the rate at which they acquire cultural traits. D. Train a wild chimp to use a new food source, and document how quickly this knowledge spreads to the rest of the population. E. Introduce a new food source to a population and see which chimps learn how to use it first.
Calculate the minimum number of nucleotide triphosphate molecules that are hydrolyzed in the synthesis of a 200-amino-acid bacterial protein and list the stages of translation responsible for the hydrolysis
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One goal of the Human Genome Project was to sequence the ____________________ (number of) chromosomes in
the human genome, including all autosomes and the sex chromosomes. Fill in the blank(s) with the appropriate word(s).
Non-native species that are introduced to new environments, spread far beyond the original point of introduction, and cause damage are called
A) predators. B) pathogens. C) invasive species. D) herbivores.