Write the base sequence in a complementary DNA segment if each original segment has the following base sequence:
d. A T A T G C G C T A A A

Question

Write the base sequence in a complementary DNA segment if each original segment has the following base sequence:

d. A T A T G C G C T A A A

Accepted Answer

All right. Hello everyone. So this question says if the base sequence of the original segment is T A GGC att A GT, what is the base sequence of the complementary DNA segment? And here we have four different answer choices labeled A through D proposing different complementary DNA segments. Now because we are talking about two strands that are complementary to each other. We are talking about double stranded DNA or DS DNA. And because of that, it's important to recall that these two strands of DNA are held together because of complementary base pairing. In other words, one base from one strand is pairing up with its complementary base on the opposite strand. And so with that in mind, it's important to recall the base pairing rules which bases pair with what now DNA has four bases associated with it, right? We have adenine, guanine, thymine, and cytosine, adenine pairs with thymine and vice versa, while guanine pairs with cytosine and vice versa. And so with this in mind, right, this is how we're going to come up with the complement of our given strand. And let's do so in groups of threes just to simplify the process So on the original strand, the first segment here, the first group of three is T A and C T is paired with A A is paired with T and C is paired with G. So the first base of the complementary strand are A T and G from there, I move on to the next group of three, just erase the first one which is GGC. Now we have two guanines, which means that we need two cyto zines to pair with it and one guanine for our cytosine. So, so far we have at TGCG. So now let's move on to the third set of three, which is A T. So a pairs with T and both TS are going to pair with A, this leads us now with our last set of three, which is a GT. Now a pairs with T G pairs with C and T pairs with a, this means that the completed complementary strand is at tggtatc, which means that our answer is going to be option A in the multiple choice and there you have it. So with that being said, thank you so much for watching and I hope you found this helpful.

Write the base sequence in a complementary DNA segment if each original segment has the following base sequence:
d. A T A T G C G C T A A A

Verified video answer for a similar problem:

Key Concepts

DNA Base Pairing

Complementary DNA Strand

Transcription and Replication

Write the base sequence in a complementary DNA segment if each original segment has the following base sequence:d. A T A T G C G C T A A A

Verified video answer for a similar problem:

Key Concepts

DNA Base Pairing

Complementary DNA Strand

Transcription and Replication

Write the base sequence in a complementary DNA segment if each original segment has the following base sequence:
d. A T A T G C G C T A A A