Domanda del libro di testo
A developmental disorder in humans called spina bifida is a neural tube defect linked to a maternal diet low in folate during pregnancy.
What does this suggest about the cause of spina bifida?
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Ch. 19 - Epigenetics
Klug12th EditionConcepts of GeneticsISBN: 9780135564776
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TOC.tableOfContents
- Ch. 1 - Introduction to Genetics17
- Ch. 2 - Mitosis and Meiosis36
- Ch. 3 - Mendelian Genetics51
- Ch. 4 - Extensions of Mendelian Genetics74
- Ch. 5 - Chromosome Mapping in Eukaryotes51
- Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages46
- Ch. 7 - Sex Determination and Sex Chromosomes33
- Ch. 8 - Chromosome Mutations: Variation in Number and Arrangement40
- Ch. 9 - Extranuclear Inheritance31
- Ch. 10 - DNA Structure and Analysis43
- Ch. 11 - DNA Replication and Recombination44
- Ch. 12 - DNA Organization in Chromosomes30
- Ch. 13 - The Genetic Code and Transcription54
- Ch. 14 - Translation and Proteins47
- Ch. 15 - Gene Mutation, DNA Repair, and Transposition41
- Ch. 16 - Regulation of Gene Expression in Bacteria29
- Ch. 17 - Transcriptional Regulation in Eukaryotes41
- Ch. 18 - Post-transcriptional Regulation in Eukaryotes33
- Ch. 19 - Epigenetics33
- Ch. 20 - Recombinant DNA Technology44
- Ch. 21 - Genomic Analysis36
- Ch. 22 - Applications of Genetic Engineering and Biotechnology36
- Ch. 23 - Developmental Genetics37
- Ch. 24 - Cancer Genetics34
- Ch. 25 - Quantitative Genetics and Multifactorial Traits54
- Ch. 26 - Population and Evolutionary Genetics45
Klug12th EditionConcepts of GeneticsISBN: 9780135564776Non è quello che usi tu?Cambia libro di testo
Capitolo 19, Problema 18
How are mutations in histone acetylation (HAT) genes linked to cancer?
Guida verificata passo dopo passo1
span>Step 1: Understand the role of histone acetylation in gene expression.
span>Step 2: Recognize that histone acetylation is a process where acetyl groups are added to histone proteins, leading to a more relaxed chromatin structure and increased gene expression.
span>Step 3: Identify that Histone Acetyltransferases (HATs) are enzymes responsible for adding acetyl groups to histones.
span>Step 4: Consider how mutations in HAT genes can disrupt normal acetylation patterns, potentially leading to abnormal gene expression.
span>Step 5: Explore how such disruptions in gene expression can contribute to the development and progression of cancer by affecting genes involved in cell cycle regulation, apoptosis, and other critical cellular processes.
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Histone Acetylation
Histone acetylation is a post-translational modification where acetyl groups are added to histone proteins, leading to a more relaxed chromatin structure. This modification enhances gene expression by allowing transcription factors easier access to DNA. The balance of acetylation and deacetylation is crucial for normal cellular function and regulation of gene expression.
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07:55
Histone Protein Modifications
HAT Genes
Histone Acetyltransferase (HAT) genes encode enzymes that catalyze the addition of acetyl groups to histones. Mutations in these genes can disrupt normal acetylation patterns, potentially leading to aberrant gene expression. This dysregulation can contribute to oncogenesis by activating oncogenes or silencing tumor suppressor genes.
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09:09Mapping Genes
Cancer and Epigenetics
Cancer is often associated with epigenetic changes, which include modifications like histone acetylation. These changes can alter gene expression without altering the underlying DNA sequence. Mutations in HAT genes can lead to epigenetic alterations that promote uncontrolled cell growth and survival, key characteristics of cancer cells.
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08:34Cancer Causes
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A developmental disorder in humans called spina bifida is a neural tube defect linked to a maternal diet low in folate during pregnancy.
Should researchers be looking for mutant alleles of genes that control formation and differentiation of the neural tube?
453
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Domanda del libro di testo
A developmental disorder in humans called spina bifida is a neural tube defect linked to a maternal diet low in folate during pregnancy.
Does this exclude genetic mutations as a cause of this condition?
367
views