| 单词 | homologous chromosome |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔asynapsis〕The failure of homologous chromosomes to pair during meiosis.不联会：在减数分裂期间同源染色体不联会成对美国传统〔crossing over〕The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.交换：一种发生在减数分裂期间的、有助于遗传变异的同源染色体之间的遗传物质的交换美国传统〔crossover〕A characteristic resulting from the exchange of genetic material between homologous chromosomes during meiosis.交换特征：由减数分裂期内同源染色体之间的遗传物质的交换而产生的特征美国传统〔disjunction〕Genetics The separation of homologous chromosomes during meiosis.【遗传学】 在减数分裂过程中同源染色体的分离美国传统〔dyad〕Biology One pair of homologous chromosomes resulting from the division of a tetrad during meiosis.【生物学】 二分体：一对由四分体在成熟分裂过程中形成的同源染色体美国传统〔heterozygote〕An organism that has different alleles at a particular gene locus on homologous chromosomes.杂合体：在同源染色体的某一特定基因位点上有不同的等位基因的有机体美国传统〔homozygote〕An organism that has the same alleles at a particular gene locus on homologous chromosomes.纯合子：在同源染色体上某一特定基因座有相同等位基因的生物体美国传统〔homozygous〕Having the same alleles at a particular gene locus on homologous chromosomes.纯合的：在同源染色体上某一特定基因座有相同等位基因的美国传统〔multivalent〕Genetics Of or relating to the association of three or more homologous chromosomes during the first division of meiosis.【遗传学】 多价的：属于在第一时期成熟分裂时三个或者更多的同源染色体的联合的、或与之有关的美国传统〔pachytene〕The third stage of the prophase of meiosis during which the homologous chromosomes become short and thick and divide into four distinct chromatids.粗线期：在同周期的染色体群变短变粗并分裂为四个不同的染色单体过程中减数分裂前期的第三个阶段美国传统〔tetrad〕A group of four chromatids formed from each of a pair of homologous chromosomes that split longitudinally during the prophase of meiosis.四分体：一组来自减数分裂中相互垂直分裂的一对同源染色体的四个染色单体美国传统〔univalent〕Genetics Of or relating to a chromosome that is not paired or united with its homologous chromosome during synapsis.【遗传学】 单价染色体的：属于或有关一种染色体的，在染色体结合过程中不与它的对等染色体配对或结合美国传统〔zygotene〕The stage in prophase of meiosis during which homologous chromosomes become paired. 偶线期：减数分裂的前期阶段，在此期间异体同型的染色体配对美国传统 |
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