There is no such answer

What did pavlov initially notice about the animals in his original research after conditioning took place?

Darwin studied two different types of tortoises on the galapagos islands. sort the characteristics based on which tortoise they describe.

Abacterium was found to contain a sequence of atcgggatcct in its genome. a few generations later, the sequence was found to be atcatcct. what type of mutation caused this change in the bacteria? a. duplication b. insertion c. inversion d. translocation