In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一个使一个卵受。

Only one sperm fertilises an egg.

只有一个使卵受。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄，有未成熟的卵。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：蛋白可能是雌核发育银鲫卵进行雄核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两个大小不对等的新细胞：一个相对很大的卵（成熟卵细胞）和一个微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体程中,一精子使一卵子受精。

Only one sperm fertilises an egg.

只有一精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄性，却带有未熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂大小不对等的新细胞：一相对很大的卵子（熟卵细胞）和一微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一个精子使一个卵子受精。

Only one sperm fertilises an egg.

只有一个精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄性，却带有未成熟卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两个大小不新细胞：一个相很大卵子（成熟卵细胞）和一个微小次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一精子使一卵子受精。

Only one sperm fertilises an egg.

只有一精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄性，却带有未成熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两大小不等的新细胞：一很大的卵子（成熟卵细胞）和一微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一个精子使一个卵子受精。

Only one sperm fertilises an egg.

只有一个精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄性，却带有未成熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两个小不等的新细胞：一个相的卵子（成熟卵细胞）和一个微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生中,一个精子使一个卵子受精。

Only one sperm fertilises an egg.

只有一个精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄性，却带有未熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种度上表明：精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分个大小不对等的新细胞：一个相对很大的卵子（熟卵细胞）和一个微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一个精子使一个卵子受精。

Only one sperm fertilises an egg.

只有一个精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄性，却带有未成熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两个大小的新细胞：一个相很大的卵子（成熟卵细胞）和一个微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一个精子使一个卵子受精。

Only one sperm fertilises an egg.

只有一个精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑和黑性，却带有未成熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子膜能是雌核发育银鲫卵子进行核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两个大小不对等的新细胞：一个相对很大的卵子（成熟卵细胞）和一个微小的次级极体。

In human reproduction,one female egg is usually fertilized by one sperm.

人体生殖过程中,一个精子使一个卵子受精。

Only one sperm fertilises an egg.

只有一个精子使卵子受精。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈，却带有未成熟的卵子。

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

某种程度上表明：精子可能是雌核发育银鲫卵子进行核发育的关键因素。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母细胞又分裂成两个大小不对等的新细胞：一个相对很大的卵子（成熟卵细胞）和一个微小的次级极体。