Based on discussion in this chapter, What is a gene?

Question

Accepted Answer

Hi, everyone. Let's look at our next question. It says which one of the following statements is incorrect regarding a gene. So let's look through and evaluate our answer choices, remembering that we're looking for an incorrect statement. So a false statement when it comes to defining or describing a gene. So choice A says a gene is a stretch of DNA that contains instructions to make a functional product. Well, this is a true statement. That would be what a gene does. So let's eliminate choice. A choice B says genes can only encode for proteins and not for R N A molecules or regulatory elements. Well, this is a false statement. Um It could trip us up initially because historically, genes were thought, you thought of the one gene, one protein um hypothesis that was made and genes were associated with something that coded for a protein. But we now know that the definition of a gene is wider than that genes can encode for R N A molecules like T R N A or R R N A molecules. And they can encode for regulatory elements like promoters and enhancers. So that would be a false statement. So looks like choice B is our answer since we're looking for an incorrect statement, but to be thorough, we'll look at the others. Choice C says different organisms can have varying numbers of genes in their genomes. Well, that is absolutely true. They can have different numbers of chromosomes. So definitely they can have different numbers of genes. So since that's true, we can eliminate choice. C choice D says mutations in genes can lead to genetic disorders and diseases. Well, this is also true. So we can eliminate choice D. So again, which of the following statements is incorrect regarding a gene choice B genes can only encode for proteins and not for R N A molecules or regulatory elements. See you in the next video.

Based on discussion in this chapter, What is a gene?

Key Concepts

Definition of a Gene

Gene Expression

Genetic Variation

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