| 单词 | Deletion mutation |
| 释义 |
Deletion mutation
原声例句
经济学人 Science and technology In a previous study, published in 2016, Dr Raffan and her colleagues found that obese Labradors were much more likely than slimmer dogs to be missing a small section of DNA in the gene, a so-called deletion mutation. 在2016年发表的一项研究中，拉凡博士和她的同事发现， 肥胖的拉布拉多犬比苗条的狗更有可能在基因中缺失一小段DNA，即所谓的缺失突变。
中文百科
删除 (遗传学) Deletion (genetics)（重定向自Deletion mutation）
   删除（英语：Deletion）在遗传学中有时也称为删除突变或微删除，指染色体或DNA串行的一部分发生缺失，进而失去这些遗传物质。删除的程度不一，可能是单一碱基对，也可能是整个染色体。此种作用可于减数分裂中，染色体互换时产生，是某些遗传疾病的成因。
英语百科
Deletion (genetics) 删除 (遗传学)（重定向自Deletion mutation）
In genetics, a deletion (also called gene deletion, deficiency, or deletion mutation) (sign: Δ) is a mutation (a genetic aberration) in which a part of a chromosome or a sequence of DNA is lost during DNA replication. Any number of nucleotides can be deleted, from a single base to an entire piece of chromosome. The smallest single base deletion mutations are believed occur by a single base flipping in the template DNA, followed by template DNA strand slippage, within the DNA polymerase active site. Deletions can be caused by errors in chromosomal crossover during meiosis, which causes several serious genetic diseases. Deletions that do not occur in multiples of three bases can cause a frameshift by changing the 3-nucleotide protein reading frame of the genetic sequence. |
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