Answer Happy

QUESTION 17 What evidence would be needed in a study aimed at determining if natural selection is acting on cholesterol levels in humans? Individuals who have high cholesterol levels in their blood have fewer children on average than those who do not. Individuals who have high cholesterol levels in their blood have more children on average than those who do not. Individuals who have low cholesterol levels in their blood have children earlier in life than those who do not. Individuals who exercise daily have lower cholesterol levels in their blood than those who do not and have fewer children on average. Individuals who have a genetic tendency to have low cholesterol levels in their blood have fewer children on average than those lacking that tendency. QUESTION 18 Which of the interactions seen between species are most likely to occur within a species? Mutualism Commensalism Parasitism Competition Predation