A DNA molecule is composed of two polynucleotides joined by hydrogen bonding between their nitrogenous bases. If the one strand is known to have the nucleotide sequence, ATCCTTCCTA, what must be the complementary strand's nucleotide sequence?

Question

BlackTom AI · Accepted Answer

We start by identifying the base-pairing rules for DNA: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). Each nucleotide in the given strand has a complement on the opposite strand.

Take the provided sequence, written 5' to 3' as: A T C C T T C C T A
Determine the complementary bases in order: A pairs with T, so the first complement is T; the second base T pairs with A, giving A; the third base C pairs with G, giving G; the fourth base C pairs with G, giving G; the fifth base T pairs with A, giving A; the sixth base T pairs with A, giving A; the seventh base C pairs with G, giving G; the eighth base C pairs with G, giving G; the ninth base T pairs with A, giving A; the tenth base A pairs with T, giving T.

Putting these complements together in order yields: T A G G A A G G A T, which is written as TAGGAAGGAT.

Note on the question format: there are no provided answer options to evaluate against, so the reasoning above shows the correct complementary sequence derived from base-pairing rules. The key concept to apply is that each nucleotide has a specific, fixed pair on the opposite strand: A↔T and C↔G, read in the corresponding position opposite the given strand.

BIOL 1009 (001-006/050-055) Midterm Exam III

A DNA molecule is composed of two polynucleotides joined by hydrogen bonding between their nitrogenous bases. If the one strand is known to have the nucleotide sequence, ATCCTTCCTA, what must be the complementary strand's nucleotide sequence?

View Explanation

Log in for full answers

Similar Questions

If 30% of the nitrogenous bases in a sample of DNA from a particular organism are thymine, what percentage should be cytosine?

Question at position 46 Consider this single stranded DNA sequence: 3’ A G C A T C 5’Which of the following would be the complementary strand? 5' C T A C A G 3'5' G A U G C T 3'5' U C G U A G 3'5' T C G T A G 3'5' G A C A T C 3'

Question at position 26 The DNA of an organism is studied and found to contain 30% cytosine. Calculate the percentages of thymine and adenine in its DNA.30% thymine; 40% adenine40% thymine; 30% adenine60% thymine; 30% adenine20% thymine; 20% adenine60% thymine; 10% adenine

Cytosine makes up 19% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?

Question at position 5 For the DNA sequence 3’ ACACAGTGT 5’ the strand that fully binds (complementary base pairing) is3’ TGTGTCACA 5’ 5’ TGTGTCACA 3’3’ TGTGACACA 5’5’ ACACAGTGT 3’ 5’ TGTGACACA 3’

If a DNA double helix were composed of 10% thymine nucleotides, what would be the percentage of guanine nucleotides?

If a DNA molecule of 50 base pairs in length contains a total of 15 cytosine bases, how many thymine bases will it have?

A single stranded DNA molecule can

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler