Consider the given two statements:
Statement I: The embryos of all vertebrates including humans develop a row of vestigial gill slits just behind the head but it is a functional organ only in fish and not found in any other adult vertebrates. 
Statement II: Karl Ernst von Baer noted that embryos never pass through the adult stages of other animals.
 
1. Statement I is incorrect and Statement II is correct.
2. Statement I is correct and Statement II is incorrect.
3. Both Statement I and Statement II are correct and Statement II explains Statement I.
4. Both Statement I and Statement II are correct but Statement II does not explain Statement I.
Subtopic:  Embryological Evidence of Evolution |
 56%
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Similar biological structures or sequences in different taxa are homologous if they:

1. always perform the same function
2. result from convergent evolution
3. do not serve any known function
4. are derived from a common ancestor
Subtopic:  Embryological Evidence of Evolution |
 87%
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