If this evolutionary tree is an accurate depiction of relatedness, then which of the following should be correct?

1. The entire tree is based on maximum parsimony.

2. If all species depicted here make up a taxon, this taxon is monophyletic.

3. The last common ancestor of species B and C occurred more recently than the last common ancestor of species D and E.

4. Species A is the direct ancestor of both species B and species C.

5. The species present at position 3 is ancestral to C, D, and E

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#Question id: 15363

#Unit 4. Cell Communication and Cell Signaling

Epithelial-to-mesenchymal transition (EMT) is thought to play a crucial role during the process of metastasis in some cancers, Snail and Twist are the two transcription factors, function as EXCEPT

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#Question id: 2087

#Unit 2. Cellular Organization

Phospholipids with short or unsaturated fatty acyl chains

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#Question id: 18991

#Unit 13. Methods in Biology

Which of the following is not true about High pressure liquid chromatography (HPLC)? 

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#Question id: 7310

#Unit 5. Developmental Biology

Which statement best describes the mechanism for circadian rhythm?

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#Question id: 5556

#Unit 5. Developmental Biology

Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.