Question

7/25
which statement is true?
the longer two embryos look the same, the more closely related they are
organisms that are closely related have very different embryos
the study of embryos does not support evolution.
embryology studies similarities between embryos

Explanation:

To determine the true statement, we analyze each option:

• Option 1: In evolutionary biology, the longer (more time in development) two embryos resemble each other, the more closely related the species are (embryonic similarity reflects shared ancestry).
• Option 2: Closely related organisms typically have similar embryos, so this is false.
• Option 3: Embryology (e.g., similar embryonic stages in vertebrates) strongly supports evolution, so this is false.
• Option 4: Embryology studies embryo development (not just similarities), so this misdefines it.

Only Option 1 aligns with evolutionary embryology principles.

Answer:

The longer two embryos look the same, the more closely related they are