Concept explainers
To discuss:
On or off of gene expression for production of breast milk.
Introduction:
DNA is a genetic material consisting of a long stretch of
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ANATOMY & PHYSIOLOGY: THE UNITY OF FORM
- How gene expression can be turned on oroff according to the functions of differentkinds of cells or physiological needs thatchange over time, such as a temporary needfor breast milkarrow_forwardGene and regulation of gene activity.arrow_forwardHow stress, diet, behavior, toxins, and other factors regulate gene expression.arrow_forward
- true or false: Blocking the ability of DNA methyltransferases to target the glucocorticoid receptor gene would likely result in higher expression of these receptorsarrow_forwardChoose the statement that correctly characterizes regulated and/or constitutive gene expression. Regulated expression refers to gene expression that is either on or off, depending on the physiological or metabolic status of the cell. Constitutive expression refers to gene expression that is either on or off, depending on the physiological or metabolic status of the cell. Constitutive expression refers to gene expression that is always repressed in response to the absence of required nutrients or other metabolic molecules. Regulated expression refers to gene expression that is always on, regardless of the metabolic or physiological conditions in the cell. Regulated and constitutive expression are terms used to describe gene expression in prokaryotes only.arrow_forwardHow quorum sensing works at the levels of genes and gene productsarrow_forward
- Match the following changes with the correct responses. (Some answers may be used more than once. Some answers may not be used.) Deacetylation of histones Methylation of cytosines a single nucleotide polymorphism, where adenine may be present instead of cytosine phosphorylation of cytosines is an epigenetic change that is an epigenetic change that [Choose ] is an epigenetic change that results in decreased gene transcription is not an epigenetic change ✓ is an epigenetic change that results in increased gene transcription is an epigenetic change that could either increase or decrease gene transcriptionarrow_forwardhow the clustering of hemoglobin genesimpacts the cellular strategy to regulate expression.arrow_forwardEpigenetic marks regulate gene expression. Which epigenetic mark is NOT associated with positive gene expression? Histone acetylation Histone Methylation De-methylated DNA Methylated DNAarrow_forward
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