Question

Your DNA code is composed of a series of four nucleotides: adenine, guanine, thymidine and cytosine (A, G, T and C, respectively).

1) What is the probability an individual has the following nucleotide sequence: “TATATA” at any particular position? (assuming independence).

2) What is the probability that an individual has k T’s in their DNA code at any particular position? (k can be any integer and you may assume independence). Here we're looking for the probability of k consecutive T's.