The role of administrator absorbed much of Ben’s energy.

务耗掉本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内进杂交的个体比以两个方向进杂交的个体繁殖后要多，因此为了产生无生机的杂种，就要消耗掉一些配子。

The role of administrator absorbed much of Ben’s energy.

行政职务耗掉精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内进行杂交的个体比以两个方向进行杂交的个体繁殖后要，因此为了产生无生机的杂种，就要消耗掉一些配子。

The role of administrator absorbed much of Ben’s energy.

行政职务耗多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内进行杂交的个体比以两个方向进行杂交的个体繁殖后要多，因此为了产生无生机的杂种，就要消耗一些配子。

The role of administrator absorbed much of Ben’s energy.

职务耗掉本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内进杂交的个体比以两个方向进杂交的个体繁殖后要多，因此为了产无机的杂种，就要消耗掉一些配子。

The role of administrator absorbed much of Ben’s energy.

行政职务耗掉本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一进行杂交的个体比两个方向进行杂交的个体繁殖后要多，因此为了产生无生机的杂，就要消耗掉一些配子。

The role of administrator absorbed much of Ben’s energy.

政职务耗掉本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内交的个体比以两个方向交的个体繁殖后要多，因此为了产机的种，就要消耗掉一些配子。

The role of administrator absorbed much of Ben’s energy.

行政职本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内进行杂交的个体比以两个方向进行杂交的个体繁殖后要多，因此为了产生无生机的杂种，就要消一些配子。

The role of administrator absorbed much of Ben’s energy.

行政职务耗掉本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一种群内进行杂交的个体比以两个方向进行杂交的个体繁殖后要多，因此为了产生无生机的杂种，就要消耗掉一些配子。

The role of administrator absorbed much of Ben’s energy.

行政职务耗掉本很多精力。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一群内进行杂交的个体个方向进行杂交的个体繁殖后多，因此为了产生无生机的杂，消耗掉一些配子。