| 1. | Somatic cell hybridization is technique .
体细胞杂交是一种技术。 |
| 2. | He could effect cross-fertilization between them .
他可以实现它们间的杂交授粉。 |
| 3. | Sexual reproduction can bring about genetic commingling .
有性繁殖可取得杂交遗传。 |
| 4. | Mendel called the second generation the hybrid generation .
Mendel将第二代称为杂交代。 |
| 5. | The ability to hybridize is one measure of relationship .
杂交能力是衡量亲缘关系的一个尺度。 |
| 6. | Varieties of roses can be crossed to vary their colors .
不同品种的玫瑰可以杂交以改变其颜色。 |
| 7. | Natural crossing varies from less than 0. 5 to about 1% .
天然杂交点自05以下至1左右不等。 |
| 8. | Such crosses are found to be reasonably interfertile .
这样的杂交随时都会发现有合理的间型能育性。 |
| 9. | Thomas andrew knight created new apples by deliberate hybridization .
TA奈特用人工杂交方法育成苹果新品种。 |
| 10. | The unsuccessful crosses involved two species belonging to different series .
未成功的杂交组合都属非同族的两个种。 |
