6 of 22 All cells in a given mammal carry the same genome, yet certain genes are expressed only in a expression for a particular tissue achieved? O All different cell types in the organism express all proteins equally and degrade the proteir Different tissues express unique transcription factors that are bound to tissue-specific enh Certain organ and tissue systems, such as the nervous system, form relatively early in the specific genes are expressed. O Different tissues inactivate whole swaths of the genome, thereby achieving tissue-specific Each tissue has a unique RNA polymerase holoenzyme that achieves tissue-specific gene

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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6 of 22
All cells in a given mammal carry the same genome, yet certain genes are expressed only in a particular tissue, such as in the eye, and not expressed in other tissues, such as in the liver. How is this specificity of gene
expression for a particular tissue achieved?
O All different cell types in the organism express all proteins equally and degrade the proteins that they don't need.
O Different tissues express unique transcription factors that are bound to tissue-specific enhancer elements, thereby achieving tissue-specific gene expression.
O Certain organ and tissue systems, such as the nervous system, form relatively early in the organism's embryonic life, as compared to the epidermis; it is this relative age of the tissue lineage that determines which tissue-
specific genes are expressed.
O Different tissues inactivate whole swaths of the genome, thereby achieving tissue-specific gene expression.
O Each tissue has a unique RNA polymerase holoenzyme that achieves tissue-specific gene expression.
Transcribed Image Text:6 of 22 All cells in a given mammal carry the same genome, yet certain genes are expressed only in a particular tissue, such as in the eye, and not expressed in other tissues, such as in the liver. How is this specificity of gene expression for a particular tissue achieved? O All different cell types in the organism express all proteins equally and degrade the proteins that they don't need. O Different tissues express unique transcription factors that are bound to tissue-specific enhancer elements, thereby achieving tissue-specific gene expression. O Certain organ and tissue systems, such as the nervous system, form relatively early in the organism's embryonic life, as compared to the epidermis; it is this relative age of the tissue lineage that determines which tissue- specific genes are expressed. O Different tissues inactivate whole swaths of the genome, thereby achieving tissue-specific gene expression. O Each tissue has a unique RNA polymerase holoenzyme that achieves tissue-specific gene expression.
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