Why doesn’t the yolk spread in a neatly released egg? Sweep the yolk with the tip of a scalpel. What do you observe while doing this?

Why doesn’t the yolk spread in a neatly released egg? Sweep the yolk with the tip of a scalpel. What do you observe while doing this? What assumption can you make based on this?

Since the yolk is an egg yolk, it has a cytoplasmic membrane (vitelline membrane) that prevents the yolk from spreading.

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