The male gamete could not unite with the female.雄配子不能与雌配子结合.Gametes may develop without fertilization, or meiosis may substantially precede gamete formation.配子不经过受精也可能发育,若减数分裂先于配子形成,配子也可能发育.Objective : To investigate the...
The houses in my hometown were chiefly composed of wood.我家乡的房子过去多由木料制成.The crowd yelled when the hometown team scored a touchdown.当他们自己的队得了底线分时,人群高声呼喊起来.He returned to his hometown in the spring of 1969.他在1969年春天回到了故乡....