| 1. | The progeny resembled one of the other of the parents .
后代象亲本的一方或另一方。 |
| 2. | This hybrid seemed to combine the properties of both parental species .
这个杂种似乎兼具两个亲本树种的特征。 |
| 3. | F1 females could be backcrossed to the male homozygous recessive parent .
也可用雌性F1与隐性纯合雄性亲本回交。 |
| 4. | Autopolyploids are genetically isolated from their parental diploids .
同源多倍体与其亲本二倍体在遗传上相隔离。 |
| 5. | A compromise has to be made as to the choice of clones to be used as pollen parents .
对于用作授粉亲本的一些无性系的选择，不得不采用一种折衷办法。 |
| 6. | The term is usually reserved for those cases in which the hybrids outperform the better of the two parents .
这个名词通常是指杂种表现得比两个亲本好。 |
| 7. | The genetic quality of the parents can be judged with much greater certainty than in mass selection .
亲本的遗传品质比起混合选择来，能判断得更加确切。 |
| 8. | The hybrids and progeny of intervarietal crosses of p. graminis were tested on the parental hosts .
杆锈变种间杂交的一些杂种和后代在其亲本寄主上受到测量。 |
| 9. | The kind of mating, using as one parent a known homozygous recessive, is called a testcross .
这种杂交即利用一个已知的纯合的隐性作为一个亲本的杂交，称为测交。 |
| 10. | In these cases, the parental cells differ at least with respect to genotype if not phenotype as well .
在这些情况下，亲本细胞即使不在表现型上至少也在基因型上有区别。 |
