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.

这种鲈和鲈为雄性，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银鲫卵子进行雄的关键因素。

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.

某程度上表明：精子膜蛋白可能是雌核鲫卵子进行雄核的关键因素。

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,一个子使一个子受。

Only one sperm fertilises an egg.

只有一个子使子受。

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

小口黑鲈和黑鲈为雄性，却带有未成熟的子。

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

某程度上表明：子膜蛋白可能是雌核发育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：一个相对很大的子（成熟细胞）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,精子使子受精。

Only one sperm fertilises an egg.

只有精子使子受精。

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，母细胞又分裂成两大小不对等的新细胞：相对很大的子（成熟细胞）和微小的极体。

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,精子使子受精。

Only one sperm fertilises an egg.

只有精子使子受精。

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，母细胞又分裂成两大小不对等的新细胞：相对很大的子（成熟细胞）和微小的极体。

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

人体生殖过程中,一个精一个受精。

Only one sperm fertilises an egg.

只有一个精受精。

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

这种小口黑鲈和黑鲈为性，却带有未成熟的。

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：精膜蛋白可能是雌核发育银鲫核发育的关键因素。

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（成熟细胞）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,一个一个受。

Only one sperm fertilises an egg.

只有一个受。

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

这种小口黑鲈和黑鲈为雄性，却带有未成熟的。

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：膜蛋白可能是雌核发育银鲫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，次级胞又分裂成两个大小不对等的新胞：一个相对很大的（成熟胞）和一个微小的次级极体。