Which of the following best describes the effect of cancer-causing mutations on the cell cycle? the mutations increase the speed of the cycle. the mutations cause the cell to bypass checkpoints in the cycle the mutations eliminate one or more stages of the cycle. the mutations interfere with s stage of the cycle. none of these.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.