If the sequence of a segment of DNA is 5^'-CGCAACTAC-3^', what is the appropriate sequence for t

Name: Problem 4, Chapter 11: Biology
Uploaded: 2021-06-11T17:21:12-08:00
Duration: 1 min 46 s
Channel: Emily Anderson
Description: If the sequence of a segment of DNA is 5^'-CGCAACTAC-3^', what is the appropriate sequence for the opposite strand? a. 5^'-GCGTTGATG-3^' b. 3^'-ATACCAGCA-5^' c. 5^'-ATACCAGCA-3^' d. 3^'-G C G T T G A T G-5^'

step 1 For this problem, we have to find the complementary DNA strand of the one given, which is right

Question

If the sequence of a segment of DNA is $5^{\prime}-\mathrm{CGCAACTAC}-3^{\prime},$ what is the appropriate sequence for the opposite strand? a. $5^{\prime}-\mathrm{GCGTTGATG}-3^{\prime}$ b. $3^{\prime}-\mathrm{ATACCAGCA}-5^{\prime}$ c. $5^{\prime}-\mathrm{ATACCAGCA}-3^{\prime}$ d. $3^{\prime}-G C G T T G A T G-5^{\prime}$

   If the sequence of a segment of DNA is $5^{\prime}-\mathrm{CGCAACTAC}-3^{\prime},$ what is the appropriate sequence for the opposite strand?
a. $5^{\prime}-\mathrm{GCGTTGATG}-3^{\prime}$
b. $3^{\prime}-\mathrm{ATACCAGCA}-5^{\prime}$
c. $5^{\prime}-\mathrm{ATACCAGCA}-3^{\prime}$
d. $3^{\prime}-G C G T T G A T G-5^{\prime}$

Biology

Eric P. Widmaier;… 4th Edition

Chapter 11, Problem 4

Instant Answer

Solved by Expert Emily Anderson

06/11/2021

Step 1

According to the AT GC rule, A pairs with T and G pairs with C. So, the complementary strand of the given sequence $5^{\prime}-\mathrm{CGCAACTAC}-3^{\prime}$ will be $\mathrm{GCGTTGATG}$. Show more…

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If the sequence of a segment of DNA is $5^{\prime}-\mathrm{CGCAACTAC}-3^{\prime},$ what is the appropriate sequence for the opposite strand? a. $5^{\prime}-\mathrm{GCGTTGATG}-3^{\prime}$ b. $3^{\prime}-\mathrm{ATACCAGCA}-5^{\prime}$ c. $5^{\prime}-\mathrm{ATACCAGCA}-3^{\prime}$ d. $3^{\prime}-G C G T T G A T G-5^{\prime}$

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Key Concepts

Complementary Base Pairing

This concept refers to the specific pairing between nitrogenous bases in DNA, where adenine pairs with thymine (via two hydrogen bonds) and cytosine pairs with guanine (via three hydrogen bonds). Correct complementarity ensures the accurate replication and transcription of genetic information.

Antiparallel Orientation

DNA strands run in opposite directions, meaning one strand runs from the 5' end to the 3' end while its complementary strand runs from the 3' end to the 5' end. This antiparallel orientation is essential for enzymatic processes like replication and transcription.

Directionality of DNA Strands

The designation of 5' and 3' ends in DNA strands indicates the direction in which the sugar-phosphate backbone is formed. Recognizing these ends is crucial when writing or reading DNA sequences as it determines the orientation and order of nucleotides.

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