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- 1. 遺伝学:用語集genetics glossary of terms [show details]
…mandatory recombination during meiosis. Linkage therefore implies the linked loci are in close physical proximity to each other. The genetic linkage distance is expressed as the recombination fraction, …
- 2. 遺伝学の基礎概念:染色体と細胞分化basic genetics concepts chromosomes and cell division [show details]
… is another critical part of meiosis Recombination further enhances diversity as pieces of the DNA are broken and then recombined. Errors can happen if this recombination has a breakpoint across a gene …
- 3. ゲノム疾患:概要genomic disorders an overview [show details]
…and unequal recombination during meiosis. This can lead to duplication and deletion of chromosomal material resulting in CNVs. This process is known as nonallelic homologous recombination (NAHR) , the …
- 4. 染色体の転座、欠失、および逆位chromosomal translocations deletions and inversions [show details]
…result from non-allelic homologous recombination (NAHR), in which highly homologous repeat DNA sequences lead to unequal crossing over and erroneous recombination in meiosis I. Similarly, unequal crossing …
- 5. 原発性早期卵巣障害(早期卵巣機能不全)の病因と原因pathogenesis and causes of spontaneous primary ovarian insufficiency premature ovarian failure [show details]
…families in the absence of other syndromic features have been found in genes important for meiosis, homologous recombination, and DNA damage and repair . Interestingly, some of the genes involved overlap with …
Japanese Journal
- Topics from special edition 体細胞分裂と減数分裂における染色体・クロマチン構造の違い
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- DNAの組換え ~ 2.減数分裂時に起こる遺伝的組換え機構 減数分裂とは配偶子(卵や精子など)を作る時の細胞分裂の事です。この時に起こる組換えは相同染色体の対合時に起こります。図1に示すように、一方の染色分体のDNA鎖が ...
- 生物が自ら制御して遺伝情報を再編成することを遺伝的組換え (Genetic recombination)といいます。 遺伝的組換えは,さらに以下の4種類に分けられます。 1,相同組換え(Homologous recombination)(=普遍的組換え(general ...
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★リンクテーブル★
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- 英
- meiosis
- 同
- 成熟分裂 maturation division、還元分裂 reduction division
- 関
- 有糸分裂 mitosis、細胞質分裂 cytokinesis
- 対
- 体細胞分裂
- 精子や卵子を作りために、生殖細胞で起こる細胞分裂である。
- 第一減数分裂と第二減数分裂を経る。
- 減数分裂第一分裂の際に、母型および父型の相同染色体が赤道上に対合し、二価染色体を形成する。この状態で交差が生じる
減数分裂の段階
- HIS.59
S期
- DNAの複製により二倍体(2n)から四倍体(4n)になる
第一次減数分裂
第二次減数分裂
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- 関
- 開裂、境界線、区画、混乱、細分化、断片化、破壊、破損、部分、部門、分割、崩壊、門、分ける、乱す、割る、フラグメンテーション
- division、disruption、fission、fragmentation、divide、split、disrupt、split