Understanding Differential Gene Expression
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Questions and Answers

What is the primary reason for limiting gene expression in somatic cells?

  • To prevent unwanted cell differentiation
  • To increase the complexity of multicellular organisms
  • To facilitate stem cell growth
  • To ensure the correct proteins are produced (correct)

What is the term used to describe an active gene that is currently being expressed in a cell?

  • Dormant gene
  • Recessive gene
  • Silenced gene
  • Expressed gene (correct)

Why is differential gene expression important during the development of a fetus?

  • To increase the number of stem cells
  • To activate specific genes for various cell types (correct)
  • To ensure identical cell copies are made
  • To prevent stem cell growth

What is the role of messenger RNA (mRNA) in gene expression?

<p>Transporting DNA code to the ribosome for protein synthesis (A)</p> Signup and view all the answers

What would be the consequence if skin cells started expressing liver proteins according to the text?

<p>Growth of a new liver on the skin (B)</p> Signup and view all the answers

Which of the following cells carry an identical copy of DNA?

<p>Somatic cells (except B lymphocytes) (C)</p> Signup and view all the answers

What is the process that allows somatic cells to transform into specialized cell types?

<p>Cellular differentiation (C)</p> Signup and view all the answers

What does the term 'differential gene expression' refer to?

<p>The process of activating different genes in a cell (D)</p> Signup and view all the answers

Which of the following is true about stem cells?

<p>They are undifferentiated cells with the potential to become any cell type (B)</p> Signup and view all the answers

What is the result of a stem cell undergoing cellular differentiation?

<p>It becomes a somatic cell with a specific phenotype (A)</p> Signup and view all the answers

What is the purpose of differential gene expression analysis?

<p>To determine which genes are actively being expressed in cells (B)</p> Signup and view all the answers

In the context of differential gene expression, what is the role of a test group?

<p>To be subjected to a certain treatment or condition being studied (C)</p> Signup and view all the answers

Why is it important for samples in differential gene expression analysis to have replicates?

<p>To divide each sample for testing in multiple separate parts (B)</p> Signup and view all the answers

Which statement best describes somatic cells' approach to unused genes?

<p>Somatic cells keep unused genes unaltered. (B)</p> Signup and view all the answers

How does differential gene expression analysis contribute to understanding cancer causes?

<p>By quantifying and comparing gene expression in cancerous and non-cancerous cells (A)</p> Signup and view all the answers

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