Choose the RNA transcript that complements the DNA sequence 5'ATT-GTA-CTG-CAA3'

Question

BlackTom AI · Accepted Answer

RNA uses uracil (U) instead of thymine (T), and complementary base-pairing is A–U and T–A (for RNA–DNA), C–G and G–C. Given the DNA strand 5' ATT-GTA-CTG-CAA 3', the RNA strand that base-pairs with it must be antiparallel and complementary.

Write the DNA (given) left to right: 5' A T T - G T A - C T G - C A A 3'.
Find the complementary bases (pairing each DNA base with the RNA base that pairs to it):
- A (DNA) pairs with U (RNA)
- T (DNA) pairs with A (RNA)
- T → A
- G → C
- T → A
- A → U
- C → G
- T → A
- G → C
- C → G
- A → U
- A → U

This complementary sequence as written opposite the given DNA is 3' U A A - C A U - G A C - G U U 5' (note antiparallel orientation). To present the RNA transcript in the standard 5' → 3' direction, reverse that sequence to get 5' U U G - C A G - U A C - A A U 3'.

Compare to the choices: option (a) is exactly 5' UUG-CAG-UAC-AAU 3', matching the derived RNA transcript.

Why the other choices are incorrect:
- (b) and (d) contain T (thymine), which is a DNA base, not RNA, so they cannot be RNA transcripts.
- (c) 5' UAA-CAU-GAC-GUU 3' has the wrong order and several base mismatches (for example the first three bases are UAA but the correct first three are UUG), so it does not correctly complement the given DNA strand.

Therefore the correct RNA transcript is option a: 5' UUG-CAG-UAC-AAU 3', which matches the provided answer.

Choose the RNA transcript that complements the DNA sequence 5'ATT-GTA-CTG-CAA3'Single choice

Similar Questions

T/F When RNA polymerase encounters T in the DNA, it will add A in the mRNA

Choose the RNA transcript that complements the DNA sequence 5'CGC-ATT-TGC-ATG3'

The template strand of a section of the gene that encodes the SOD1 protein is TAC CGC TGC TTC CGG CAC ACG CACWrite down the sequence of the RNA bases which will be present in the mRNA transcribed from this gene:

A gene's coding (or non-template) strand is as follows: 5'-ATGTAGCAG. Which of the following would be the RNA product after transcription?

A template strand of DNA is: 5' CGT AGC 3' What is corresponding strand of mRNA?

Question at position 8 An excess of growth hormone (GH) before puberty can result in the development ofgigantism.Graves' disease.acromegaly.pituitary dwarfism.Clear my selection

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