How many introns are present on a gene that consists of 2 exons?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Question:
How many introns are present on a gene that consists of 2 exons?

### Answer Options:
- 1
- 2
- 3
- 0
- The number cannot be determined from the information provided.

### Explanation:
The question is asking about the number of introns in a gene that has 2 exons. 

#### Clarification:
In eukaryotic genes, an **exon** is a segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence. An **intron** is a segment of a DNA or RNA molecule that does not code for proteins and interrupts the sequence of genes.

For a gene with 2 exons, typically each exon is separated by one intron. Therefore, if there are 2 exons, you will have 1 intron separating them.

### Correct Answer:
- 1
Transcribed Image Text:### Question: How many introns are present on a gene that consists of 2 exons? ### Answer Options: - 1 - 2 - 3 - 0 - The number cannot be determined from the information provided. ### Explanation: The question is asking about the number of introns in a gene that has 2 exons. #### Clarification: In eukaryotic genes, an **exon** is a segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence. An **intron** is a segment of a DNA or RNA molecule that does not code for proteins and interrupts the sequence of genes. For a gene with 2 exons, typically each exon is separated by one intron. Therefore, if there are 2 exons, you will have 1 intron separating them. ### Correct Answer: - 1
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