Lamarck suggested that animals evolved in the process of evolution by acquired characteristics. which one of the following statements best describes lamarck's suggestion?

a.
some giraffes use their long necks to hunt animals that live in holes.

b.
giraffes with the acquired characteristic of long necks pass on this trait to their offspring.

c.
all offspring will have longer necks than their parents.

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.