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Researchers at Northwestern knew fertilization triggered millions of zinc particles, but they’d never actually seen the process until now. Update, Dec. 19, 2014: This post has been updated to specify ...

Thomas Markle Rushed Into Emergency Surgery as Children Beg Meghan for Compassion Meghan Markle’s father, Thomas Markle, is reportedly in intensive care after undergoing emergency surgery in the ...

Upon fertilization, two highly specialized meiotic germ cells, the sperm and egg, need to be transformed into a totipotent mitotic embryo. Sperm bind to the zona pellucida of the egg by an unknown ...