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

人体生殖过程中,一使一卵受。

Only one sperm fertilises an egg.

只有一使卵受。

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

这种小口黑鲈和黑鲈为雄性，却带有未成熟的卵。

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：膜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，次级卵又分裂成两大小不对等的新：一相对很大的卵（成熟卵）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，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。

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

人过程中,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小不对等的新细胞：一相对很的卵子（成熟卵细胞）和一微小的次级极。

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

人体殖过程中,个精子使个卵子受精。

Only one sperm fertilises an egg.

只有个精子使卵子受精。

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，次级卵母又分裂成两个大小不对等的新：个相对很大的卵子（成熟卵）和个微小的次级极体。

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小不对等新细胞：一个相对卵子（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,精子使卵子受精。

Only one sperm fertilises an egg.

只有精子使卵子受精。

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对等的新细胞：对很大的卵子（成熟卵细胞）和微小的次级极体。

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.

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.

某程度上表明：精子膜蛋白可能是雌核发卵子进行雄核发的关键因素。

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,个精子使个卵子受精。

Only one sperm fertilises an egg.

有个精子使卵子受精。

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新细胞：个相对很大卵子（成熟卵细胞）和个微小次级极体。