The male rate of GIFT strain was similar to " 78 " strain, but was less than " 88 " strain and hybrid.

吉富品系的雄性率同“78”品系相似，低于“88”品系和尼奥鱼。

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Male foetuses put much more strain on the mother's body, they are more difficult to give birth to, and they are much more likely to take risks.

BBC: NEWS | Health | Optimists more likely to have boys