Murine zygotes are more sensitive to commonly - used fertilization culture media 小鼠合子对常用人体外受精培养液敏感性较高
Cytological investigation of somatic and zygotic embryogenesis of fraxinus mandshurica 水曲柳体细胞胚与合子胚发生的细胞学研究
Methods : nine heterozygous mutation carriers and nine healthy controls were investigated 方法：调查9名杂合子突变携带者和9名健康对照者。
Sickle cell anemia represents patients who are homozygous for hemoglobin s ( i . e . hemoglobin ss ) 镰状细胞性贫血是指血红蛋白s为纯合子的患者（如血红蛋白ss ） 。
On selfing or crossing heterozygotes some double recessives may appear , giving viable offspring 在自交或杂交产生的杂合子中双隐性性状可以表现出来并产生可育后代。
Now and then , there exists the phenomenon that a few sperms penetrate into egg , while polyspermy is few 70min ，合子核进入第一次有丝分裂中期。 80min ，染色体处于有丝分裂后期。
For example , in the development of the plant embryo from the zygote , one end becomes the radicle , the other gives rise to cotyledons 例如植物由合子到胚的发育，一端形成胚根，另一端成为子叶。
Two diploid gametes may fuse to give a tetraploid zygote , or gamete may develop directly by parthenogenesis 两个二倍体配子融合可能产生一个四倍体合子，这样的配子也可以通过孤雌生殖直接发育而来。
Alternatively , like allopolyploids , they may arise by the nondisjunction of chromatids during the mitotic division of a zygote 与异源多倍体相似的是，它们也是在有丝分裂中合子的染色单体不分离形成的。
Selfing heterozygotes halves the heterozygosity , and thus outbreeding maintains heterozygosity and produces a more adaptable population 自交杂合子有一半杂合性，因此远系繁殖可以产生适应能量更强的种群。
