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In fruit flies, there are molecules in the egg that determine the future head and tail ends of the animal. What occurs when mrna from the head end of an embryo is injected into the tail end of an early
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In fruit flies, there are molecules in the egg that determine the future head and tail ends of the animal. What occurs when mrna from the head end of an embryo is injected into the tail end of an early embryo?.

User S M
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Answer: Some head structures develop at the tail end; the head end develops normally.

Explanation: In fruit flies, there are molecules in the egg that determine the future head and tail ends of the animal. What occurs when mRNA from the head end of an embryo is injected into the tail end of an early embryo?

User David Barry
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