Which of the following is a process during meiosis that leads to genetic variation?

a.
cellular material replicates before separation
b.
the nuclear envelope breaks down within the cell
c. genes independently separate from one another
d. dna organizes into chromosomes within the nucleus
reset

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.