Study Finds How Egg and Sperm Connect - VOA Learning English
How a sperm and an egg come together has long been a mystery.
Now, new research by scientists in Austria provides interesting insight. It shows that fertilization works like a lock and key in animal… [+2700 chars]
Now, new research by scientists in Austria provides interesting insight. It shows that fertilization works like a lock and key in animal… [+2700 chars]
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