Question

The level of transcription of a gene is tested by creating deletions in the gene as shown in the illustration. These modified genes are tested for their level of transcription: $(++)$ normal transcription levels; $(+)$ low transcription levels; $(+++)$ high transcription levels. Which deletion is in an enhancer involved in regulating the gene? a. deletion 1 b. deletion 2 c. deletion 3 d. deletion 4

Name: Problem 48, Chapter 16: Biology for AP Courses
Uploaded: 2023-09-07T21:10:29-08:00
Duration: 6 s
Channel: Taylor Jordan
Description: The level of transcription of a gene is tested by creating deletions in the gene as shown in the illustration. These modified genes are tested for their level of transcription: (++) normal transcription levels; (+) low transcription levels; (+++) high transcription levels. Which deletion is in an enhancer involved in regulating the gene? a. deletion 1 b. deletion 2 c. deletion 3 d. deletion 4

   The level of transcription of a gene is tested by creating deletions in the gene as shown in the illustration. These modified genes are tested for their level of transcription: $(++)$ normal transcription levels; $(+)$ low transcription levels; $(+++)$ high transcription levels. Which deletion is in an enhancer involved in regulating the gene?
a. deletion 1
b. deletion 2
c. deletion 3
d. deletion 4

Biology for AP Courses

Julianne Zedalis,…

Chapter 16, Problem 48

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Solved by Expert Taylor Jordan

09/07/2023

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We need to identify which deletion is in an enhancer, a sequence of DNA that increases the rate of transcription. Show more…

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The level of transcription of a gene is tested by creating deletions in the gene as shown in the illustration. These modified genes are tested for their level of transcription: $(++)$ normal transcription levels; $(+)$ low transcription levels; $(+++)$ high transcription levels. Which deletion is in an enhancer involved in regulating the gene? a. deletion 1 b. deletion 2 c. deletion 3 d. deletion 4

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Key Concepts

Deletion Analysis

Deletion analysis is a method used to identify the roles of specific DNA regions in gene regulation by systematically removing segments and measuring the resultant changes in transcription. This approach helps in pinpointing regulatory elements such as enhancers.

Gene Regulation

Gene regulation involves processes and elements that control the transcription of genes. It encompasses the interplay between promoters, enhancers, silencers, and other regulatory DNA sequences to ensure genes are expressed at the proper times and levels.

Enhancers

Enhancers are a type of cis-regulatory element that can significantly boost transcription levels of a gene. They function independently of their distance or orientation relative to the gene and bind transcription factors, amplifying the gene’s expression.

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