The mature mRNA transcribed from the human β-globin gene is considerably longer than the sequence needed to encode the 146–amino acid polypeptide. Give the names of three sequences located on the mature β-globin mRNA but not translated.

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Hi, everybody. Let's look at our next question. Which of the following characteristics of the genetic code is true. Choice. A, the genetic code is composed of linear sequences of ribonucleotide that form M R N A molecules. Choice B each M R N A sequence is composed of groups of three ribonucleotide letters known as a triplet code. Choice C the code has one start signal and three stop signals, triplets that start and end translation and choice D all of the above. So let's recall that we do have that answer choice that more than one of these could be correct. And we're looking for true characteristics of the genetic code. So when we look at choice, a genetic code composed of linear sequences of ribonucleotide that form M R N A molecules. Well, this is true. I'm gonna put a little dot here rather than identifying it. Since I do have that choice. The possibility choice B each M R N A sequence composed of groups of three ribonucleotide letters known as a triplet code. Also true. Those are the codons, the code for amino acids in a protein. So I've already got more than one correct answer. So on a test, I would go ahead and circle choice ad all of the above. But to be thorough, we'll look at choice C says the code has one start signal and three stop signals, triplets that start in, in translation and this is correct. So again, which of the following characteristics of the genetic code is true choice D all of the above see you in the next video.

The mature mRNA transcribed from the human β-globin gene is considerably longer than the sequence needed to encode the 146–amino acid polypeptide. Give the names of three sequences located on the mature β-globin mRNA but not translated.

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Key Concepts

mRNA Structure

Untranslated Regions (UTRs)

Post-Transcriptional Modifications