Who and he: After a female seahorse produces eggs, she gives them to her mate...

[Huda2]

hi,
which one is best?

After a female seahorse produces eggs, she gives them to her mate, who fertilizes them and carries them in his pouch until they are ready to be born.

After a female seahorse produces eggs, she gives them to her mate ,he fertilizes them and carries them in his pouch until they are ready to be born.

thanks

[Kitosdad]

The first version is better, as it gives the reader a feeling of continuity in the text.
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[Milanya]

The first sentence is better, but you can improve the second one by changing the punctuation.

After a female seahorse produces eggs, she gives them to her mate. He fertilizes them and carries them in his pouch until they are ready to be born.
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con·text - The part of a text or statement that surrounds a particular word or passage and determines its meaning.