Human and Fish Embryos Share a Number of Features

question 67

Multiple Choice

Human and fish embryos share a number of features. Why is this?

• A)Humans and fish share a common ancestor.
• B)Embryos of all organisms, plant and animal, look alike.
• C)Mutations in human and fish embryos have caused them to look alike.
• D)Humans and fish have exactly the same genes, but as they develop, different genes are turned on in fish than in humans.

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