The cell cycle of a typical somatic cell consists of the ____ and M phases
a. interphase
b. meiosis I
c. crossing-over
d. meiosis II
e. mitosis
a
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Which two groups of primates share the closest relatedness?
a. Chimpanzee and hominids b. Lemurs and Old World monkeys c. Tarsiers and orangutans d. Orangutans and Old World monkeys e. Gibbons and hominids
The longer an animal's gut, the more time it takes for material to pass through, and the more processing can occur. Therefore meat eating mammals typically have shorter guts than grazers. Why?
What will be an ideal response?
In 2017, Holen and colleagues announced the discovery of a 130,000-year-old site in California that they claimed contained a mastodon that had been butchered by humans (genus Homo). Why did some in the scientific community express skepticism and caution in accepting the findings?
A. Humans are not thought to have mastered sophisticated tool use by 130,000 years ago. B. Mastodons are thought to have gone extinct long before that. C. The level of cooperative hunting needed to take down a mastodon did not appear until much more recently. D. It is widely believed that Homo sapiens are the only humans to have occupied North America and they did not arrive until 20,000 years ago. E. Homo neanderthalensis, the dominant hominin of the time, was vegetarian.
All coliforms are
A. enteric pathogens. B. rapid lactose fermenters. C. oxidase positive. D. fastidious. E. strains of E. coli.