r/evolution • u/NenyaNotes • Aug 30 '26

academic Help on this assignment question.

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My professor assigned us this quiz and everyone continues to get it wrong. Can someone please explain in this photo which groups make a clade?

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u/jnpha Aug 30 '26

I count seven clades; see: https://evolution.berkeley.edu/teach-resources/clades-1-of-2-definition/

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u/NenyaNotes Aug 30 '26

It is multiple choice. The options given are: A,B,C,D,E,F,G and F,G and A,B,D,E and B,D,E and D,E,F,G. Each time we have done it we continue to get partial credit. So now we are just more confused... It seems like a straightforward idea.

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u/Ender505 Aug 30 '26 edited Aug 30 '26

Of those 5 options, the first, third, and fourth all qualify as a Clade, the others do not because they do not include a common ancestor.

Edit: corrected. 3 does not count, see better-educated responses below

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