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Related Concept Videos

Mutations01:39

Mutations

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Overview
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Mutations01:35

Mutations

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Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
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Translation01:31

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Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
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Translation01:31

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Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
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Genomic Imprinting and Inheritance02:30

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Alternative RNA Splicing02:18

Alternative RNA Splicing

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Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
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Interaction of FXTAS Family History and College Degree Attainment Predicts Trajectories of Cognitive and Motor Symptoms in FMR1 Premutation Carrier Women.

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Cerebellar GABA and executive function among adult female carriers of the fragile X messenger ribonucleoprotein 1 premutation: a pilot study to examine neural underpinnings of the clinical phenotype.

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Planning for the Transition to Adulthood: Parent Perspectives on the Planning Process and Experiences of Young Adults with Fragile X Syndrome.

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Related Experiment Video

Updated: Mar 27, 2026

A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene
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A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene

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Semantic and Syntactic Language Differences Associated with the FMR1 Premutation Genotype.

Laura Friedman1, William Matchin1, Elizabeth Berry-Kravis2

  • 1Department of Communication Sciences and Disorders, University of South Carolina, 1705 College Street, Columbia, South Carolina 29208, USA.

Journal of Neurolinguistics
|March 26, 2026
PubMed
Summary
This summary is machine-generated.

Women with the Fragile X messenger ribonucleoprotein 1 (FMR1) premutation genotype show significant semantic and syntactic language differences. These findings highlight potential gene-brain-behavior links for FMR1-associated language impairments.

Keywords:
FMR1executive functionfragile X carrierfragile X premutationgrammarlanguagevocabulary

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Area of Science:

  • Neurogenetics
  • Linguistics
  • Human Genetics

Background:

  • The FMR1 premutation is found in ~1 in 150 women and 1 in 470 men.
  • Emerging evidence links the FMR1 premutation to language differences, but specific domains and executive function interactions require further study.

Purpose of the Study:

  • To investigate semantic and syntactic language skills in women with the FMR1 premutation.
  • To compare language abilities between FMR1 premutation carriers and matched controls, minimizing executive function confounds.

Main Methods:

  • Compared 109 women with the FMR1 premutation to 109 age-, education-, and IQ-matched controls.
  • Utilized standardized language repetition tasks to assess phonological, semantic, and syntactic skills.
  • Controlled for attention and working memory to isolate language effects.

Main Results:

  • Women with the FMR1 premutation exhibited significant deficits in semantic and syntactic language skills compared to controls.
  • No significant differences were observed in phonological skills.
  • Language differences were not attributable to attention or working memory impairments.

Conclusions:

  • The FMR1 premutation genotype is associated with specific semantic and syntactic language differences in women.
  • These findings contribute to understanding gene-brain-behavior pathways related to FMR1.
  • Further research is needed to clarify the clinical significance of these language differences.