If, someday, an archaean cell is discovered whose rRNA sequence is more similar to that of humans than the sequence of mouse rRNA is to that of humans, the best explanation for this apparent discrepancy would be ________.

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#Question id: 9606

#Unit 9. Diversity of Life Forms

The correct sequence, from the most to the least comprehensive, of the taxonomic levels listed here is

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#Question id: 11029

#Unit 7. System Physiology – Animal

Damage to the sinoatrial node in humans would ________.

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#Question id: 7030

#Unit 5. Developmental Biology

Organizer:

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#Question id: 1425

#Unit 4. Cell Communication and Cell Signaling

During metastasis, cells may undergo an epithelial-to-mesenchymal transition whereby there is a(n):

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#Question id: 18607

#Unit 13. Methods in Biology

The PCR consists of three defined sets of times and temperatures, termed steps

a) Denaturation at 94°C, for 0.5 min

b) Primer annealing at 55°C for 1.5 min

c) Extension at 72°C for 1 min

d) only denaturation and extension