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在Bardet-Biedl综合征中,三基遗传,这是孟德尔的衰退性疾病
N Katsanis1, S J Ansley, J L Badano
1Department of Molecular and Human Genetics, The Texas Children's Hospital, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA.
概括
巴德特-比德尔综合征 (BBS) 可能需要三个突变的等位基因,而不仅仅是两个,以引起疾病. 这种三等式模型可能会影响对遗传疾病的理解.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 眼科医生 眼科 眼科
背景情况:
- 巴德特-比德尔综合征 (BBS) 是一种复杂的遗传性疾病,具有多种症状,包括视网膜发育不良,多爪,肥胖,发育迟缓和脏缺陷.
- 传统上,BBS一直被视为一种自体相衰退性疾病,发现了BBS2和BBS6等特定基因的突变.
- 以前的研究发现了BBS2和BBS6中的突变,但BBS的确切基因机制仍然不完全理解.
研究的目的:
- 在163个家庭的队列中调查巴德特-比德尔综合征 (BBS) 的遗传基础.
- 在这些家族中选BBS2和BBS6基因中的突变.
- 根据突变查结果,重新评估BBS的遗传模型.
主要方法:
- 对163个巴德特-比德尔综合征 (BBS) 家族进行基因查,以检测BBS2和BBS6基因中的突变.
- 对受影响个体和未受影响载体中突变存在的分析.
- 血统分析来追踪与BBS相关的突变的遗传.
主要成果:
- 在四个血统中的受影响个体中发现了BBS2和BBS6的突变,共发现了三种突变基因.
- 两个血统中的未受影响个体被发现携带了两个BBS2突变,但没有BBS6突变.
- 这些发现表明遗传模式比以前假设的更复杂.
结论:
- 巴德特-比德尔综合征 (BBS) 可能不是一种简单的自体相衰退性疾病,而是一种复杂的特征.
- 为BBS的表现提出了一个三基模型,需要三个突变基.
- 这种三等式模型对理解孟德尔和多因素遗传疾病都有影响.
相关概念视频
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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.
Translation Produces the Building Blocks of Life
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.
Translation Produces the Building Blocks of Life
Genomic Imprinting and Inheritance
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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Translation
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.
Translation Produces the Building Blocks of Life
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.
Translation Produces the Building Blocks of Life

