Podcast
Questions and Answers
Which of the following best describes the permanence of heterochromatin silencing?
Which of the following best describes the permanence of heterochromatin silencing?
- Heterochromatin silencing is not necessarily permanent due to reversible modifications. (correct)
- Heterochromatin silencing is always permanent and irreversible.
- Heterochromatin silencing can be reversed only in response to developmental cues.
- Heterochromatin silencing is not reversible under any circumstances.
What do T cell receptors (TCRs) recognize?
What do T cell receptors (TCRs) recognize?
- Antigens on the surface of T cells
- Antigens presented by major histocompatibility complex (MHC) molecules (correct)
- Antigens released by damaged cells
- Soluble antigens
Do protein recognition receptors exhibit specificity in antigen recognition?
Do protein recognition receptors exhibit specificity in antigen recognition?
- They recognize antigens randomly without any specificity.
- They exhibit specificity only towards viral antigens.
- No, they recognize antigens non-specifically based on size.
- Yes, they exhibit specificity in recognizing antigen patterns or structures. (correct)
How is X inactivation in human females mediated?
How is X inactivation in human females mediated?
What is the purpose of Chromatin immunoprecipitation coupled with sequencing (ChIP-seq)?
What is the purpose of Chromatin immunoprecipitation coupled with sequencing (ChIP-seq)?
What role do maternal effect genes play in embryos?
What role do maternal effect genes play in embryos?
Do prokaryotes possess non-coding RNAs (ncRNAs)?
Do prokaryotes possess non-coding RNAs (ncRNAs)?
If a gene knockout leads to lethality in an animal model, what does it indicate about the gene?
If a gene knockout leads to lethality in an animal model, what does it indicate about the gene?
What is the main characteristic of heterochromatin?
What is the main characteristic of heterochromatin?
What type of DNA sequences does constitutive heterochromatin typically contain?
What type of DNA sequences does constitutive heterochromatin typically contain?
What role does facultative heterochromatin play in gene expression?
What role does facultative heterochromatin play in gene expression?
What contributes to the transcriptional repression of genes within heterochromatic regions?
What contributes to the transcriptional repression of genes within heterochromatic regions?
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