9. some archaeologists have debated whether the olmec were a "mother culture" of mesoamerican cultures or a "sister culture." which of the following scenarios would support the hypothesis that the olmec were not a "mother culture" but rather a "sister culture"? (5 points)
a)the olmecs' use of some ritual items were adopted by other mesoamerican cultures.
b) the olmecs invented a popular ball game that later cultures played.
c)the olmecs shared tool-making techniques with a contemporary culture. d) the olmecs' celebration of some gods was adopted by later cultures.

Its B the Olmecs invented a popular ball game that later cultures played.

C. The Olmecs shared tool-making techniques with a contemporary culture.

Explanation: Trust me on this. I took the test and got this right. And besides, all of the other options view the Olmec as a "mother culture".

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.