The DNA molecule is a double helix consisting of two strands joined by bonds involving 4 substances called bases: adenine, cytosine, guanine, and thymine. Assume that these bases are uniformly distributed along an entire strand of a DNA molecule. A geneticist randomly selects 8 consecutive bases in a DNA molecule for study, a) How many sequences of the 8 bases are possible? b) What is the probability that the sequence consists of 2 cytosine and 6 guanine bases? c) What is the probability that the sequence does not consist of 4 adenine and 4 thymine bases? a) There are possible sequences. (Simplify your answer.) b) The probability that the sequence consists of 2 cytosine and 6 guanine bases is (Type an integer or decimal rounded to four decimal places as needed.) c) The probability that the sequence does not consist of 4 adenine and 4 thymine bases is (Type an integer or decimal rounded to four decimal places as needed.)