Question

there are two single stranded DNA of 10 nucleotides each. what is probability that they form a double stranded DNA with all 10bp in watson crick pairing?
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Answer 1

Answer:

And At Position A1 any nucleotide can be present so

Probability of having a Base is 1/4 , (A,T,G,C)

but at position B1 the anealing probability reduces to 2/4 => 1/2 (A=T, GC) Chances of Pairing at Position 1 is 1/4 x 1/2 = 1/8

Similarly for each position probability remains 1/8

total positions 10 so the probability that all the nucleotides pair will be

1/8^10= Please solve for the fraction

Explanation:

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