5 Questions
Which of the following statements about gene expression is correct?
They function as promoter sequences
Which characteristic is associated with both cis and trans-acting sequences?
They work as both cis and trans-acting sequences
What process is involved in gene imprinting?
DNA methylation
Methylation of which oligonucleotide base sequence is possible?
AGGTTC
What is the functional product of the Xist gene?
RNA devoid of ORF
Study Notes
Gene Expression
- Certain sequences function as promoter sequences, which are essential for gene expression.
- These sequences can act as both cis-acting (affecting genes on the same DNA molecule) and trans-acting sequences (affecting genes on other DNA molecules).
- Tissue-specific gene expression is made possible by specific sequences that are only active in certain tissues.
Gene Imprinting
- Gene imprinting involves the process of DNA methylation, which is crucial for the regulation of gene expression.
Methylation
- Methylation can occur at specific bases, such as AGGTTC, when using oligonucleotides.
Xist Gene
- The Xist gene produces a functional RNA product that lacks an open reading frame (ORF), meaning it does not code for a protein.
Test your knowledge on molecular genetics concepts including gene expression, gene imprinting, and methylation. Understand the role of Xist gene and its functional product.
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