Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 21: Problem 4

If a DNA strand is TAC AAT AAA CGT GTC ATT, what are the codons of \(\mathrm{mRNA}\), the anticodons of \(\mathrm{tRNA}\), and the amino acid sequence? (pages \(495-97\) )

Short Answer

Expert verified
The mRNA sequence is AUG UUA UUU GCA CAG UAA, with codons AUG - UUA - UUU - GCA - CAG - UAA. The corresponding tRNA anticodons are UAC - AAU - AAA - CGU - GUC - AUU. The amino acid sequence is Methionine - Leucine - Phenylalanine - Alanine - Glutamine, with a STOP codon at the end.

Step by step solution

01

Find the mRNA sequence

To find the mRNA sequence, write out the complementary base sequence, replacing Thymine (T) with Uracil (U). Remember to use the following base pairs A-U and C-G. DNA: TAC AAT AAA CGT GTC ATT mRNA: AUG UUA UUU GCA CAG UAA
02

Group mRNA sequence into codons

Group the mRNA sequence into units of three bases, called codons: mRNA Codons: AUG - UUA - UUU - GCA - CAG - UAA
03

Find the anticodons of tRNA

To find the anticodons of tRNA, write out the complementary base sequence of each mRNA codon: mRNA Codons: AUG - UUA - UUU - GCA - CAG - UAA tRNA Anticodons: UAC - AAU - AAA - CGU - GUC - AUU
04

Find the corresponding amino acid sequence

Translate each mRNA codon into an amino acid using the genetic code table. The amino acids for the given sequence are: mRNA Codons: AUG - UUA - UUU - GCA - CAG - UAA Amino Acids: Methionine - Leucine - Phenylalanine - Alanine - Glutamine - STOP Note that UAA is a stop codon, which indicates the end of the polypeptide chain. So the amino acid sequence is: Methionine - Leucine - Phenylalanine - Alanine - Glutamine

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The enzyme responsible for adding new nucleotides to a growing DNA chain during DNA replication is a. helicase. b. RNA polymerase. c. DNA polymerase. d. ribozymes.

Which of the following is involved in controlling gene expression? a. the occurrence of transcription b. activity of the polypeptide product c. life expectancy of the mRNA molecule in the cell d. All of these are involved.

Restriction enzymes found in bacterial cells are ordinarily used a. during DNA replication. b. to degrade the bacterial cell's DNA. c. to degrade viral DNA that enters the cell. d. to attach pieces of DNA together.

Which of these associations does not correctly compare DNA and RNA? DNA a. Contains the base thymine. Contains the base uracil. b. Is double-stranded. \(\quad\) Is a single-stranded helix. c. Is found only in the nucleus. Is found in the nucleus and cytoplasm. d. The sugar is deoxyribose. \(\quad\) The sugar is ribose.

What are some biotechnology products from bacteria, plants, and animals, and what are they used for? (pages \(507-08,510\) )
See all solutions

Recommended explanations on Biology Textbooks

Responding to Change

Read Explanation

Communicable Diseases

Read Explanation

Plant Biology

Read Explanation

Control of Gene Expression

Read Explanation

Heredity

Read Explanation

Cell Communication

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free