Explain how the following mutations would affect transcr...

Question

Explain how the following mutations would affect transcription of the yeast GAL1 gene in the presence of galactose.

A deletion of the entire GAL3 gene.

Accepted Answer

Hey everyone, Let's take a look at this question together. G A L three encodes a transcription regulator in the G A. L. Gene activation in the presence of galactose. The deletion of the entire G A L three gene leads to what, So let's recall what we've learned about the G A L three gene and what a deletion of the entire G A L three gene would lead to. So let's use the information we know about. If we had a deletion of the entire G A L three gene and take a look at the following answer. So starting off with answer choice A we see stable G A L A T to G A L three complex formation enhancing the G A. L. Gene expression. Now we know that if we have that deletion of the entire G L three gene, we'll end up with a non formation of GAL GAL three complex, which would mean that we don't have that enhancing of the G A. L. Gene expression. So answer choice A is incorrect. Answer choice B says G A L A T G a L three complex is not formed enhancing the G A. L. Gene expression. We know that because we have the deletion of the entire G A L three gene and we have that non formation that means that the enhancing of the G A. L. Gene expression is not allowed. And so answer choice B is also incorrect and then answer choice C says G A L a t g a L three complex is not formed, inhibiting the G L gene expression, which we know is a true statement because the g a l a t e g a L three complex is not formed, inhibiting the JL gene expression because it leads to the formation of the three A l GAL four complex, which this complex inhibits between expression. And so answer choice C is a true statement about what would happen if we deleted that entire GAL three gene. So answer choice C is the correct answer. I hope you found this video to be helpful. Thank you and goodbye.

Explain how the following mutations would affect transcription of the yeast GAL1 gene in the presence of galactose.

A deletion of the entire GAL3 gene.

Key Concepts

GAL1 Gene Function

GAL3 Gene Role

Transcription Regulation in Yeast

Watch next

Explain how the following mutations would affect transcription of the yeast GAL1 gene in the presence of galactose.A deletion of the entire GAL3 gene.

Key Concepts

GAL1 Gene Function

GAL3 Gene Role

Transcription Regulation in Yeast

Watch next

Explain how the following mutations would affect transcription of the yeast GAL1 gene in the presence of galactose.

A deletion of the entire GAL3 gene.