| After fertilization, several achenes are produced per capitulum, and seeds are wind-dispersed. |
| Since in vitro fertilization started, two decades ago, there has been an explosion of twins, triplets, quadruplets, even quintuplets. |
| During copulation, the female transfers unfertilized eggs to the male's ventral surface, where fertilization takes place. |
| The unique feature of this phase of angiosperm development is that two fertilizations occur. |
| In the pumpkinseed sunfish, parental care is provided exclusively by males, but some males parasitize others by sneaking fertilizations. |
| About 40 percent of in vitro fertilizations in the United States involve the transfer of three or more embryos, and more than 20 percent of pregnancies from IVF procedures result in multiple births. |
