Lipids are unique in their structure and function. Which of the following is a characteristic of a type of lipid? O It retains and transmits important biological information
O Energy production, enzyme development, increased reaction speed.
O Hydrophobic and does not dissolve well in water
O Regulation of metabolism and muscle movement

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.