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由于同源四倍体植株细胞中含有四个同源染色体,在联会时能两两配对,在减数分裂时仍满足分离定律和自由组合定律,其中任意两个染色体都可以自由组合形成配子,其染色体上的基因也随着染色体的自由组合而自由组合,即在相同的情况下,每一个染色体上的基因A(a)都可以和其它染色体上A(a)的基因自由组合.因此,同源四倍体产生的配子类型和后代的分离比与二倍体不同.如何求它们的遗传问题,不少学生对此感到棘手.下面举例说明
Since autotetraploid plant cells contain four homologous chromosomes, they can be pairwise matched in the synapse and still satisfy the separation law and the free combination law at meiosis. Any two chromosomes can be freely combined to form gametes , The genes on their chromosomes are also freely combined with the free combination of chromosomes, that is, under the same circumstances, gene A (a) on each chromosome can be freely combined with the gene of A (a) on other chromosomes. , Autotetraploid generation of the gamete type and offspring segregation ratio and diploid .How to find their genetic problems, many students feel thorny.Examples below