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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- 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_forwardAt which of these levels isregulation of gene expression most energy-efficient?arrow_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_forwardName the component that is not affected /changes in epigeneticarrow_forwardAnswer question 17arrow_forward
- Epigenetic marks regulate gene expression. Which epigenetic mark is NOT associated with positive gene expression? Histone acetylation Histone Methylation De-methylated DNA Methylated DNAarrow_forwardDescribe the effects of the mutation causing the p21 promoter to no longer bind p53 on cell signaling pathways and metabolism or cell cycle control.arrow_forwardTrue or false: A somatic cell mutation may be passed on to offspring. arrow_forward
- Which level of gene expression regulation is used in eukaryotes, but not bacteria? transcription level regulation post-translational regulation translation level regulation post-transcriptional regulation (RNA modification)arrow_forwardGene expression is Usually regualated at the initiation of transcription. True Falsearrow_forwardHow heredity and health are affected notonly by genetic changes (mutations) but alsoepigenetic onesarrow_forward
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