2018
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
loss of a small RNA molecule (miR311)
|
|
|
loss of a large DNA molecule (miR397)
|
|
|
loss of a large RNA molecule (miR387)
|
|
|
loss of a small RNA molecule (miR397)
|
Detailed explanation-1: -It now appears that an independent origin of cultivation of ancestral indica or proto-indica rice took place in the Ganges plains, but that the plant was completely domesticated only when domesticated japonica arrived from China and hybridized with it about 4, 000 y ago (47).
Detailed explanation-2: -Archaeologists have unearthed bits of rice from when it was first domesticated in China. Around 10, 000 years ago, as the Pleistocene gave way to our current geological epoch, a group of hunter-gathers near China’s Yangtze River began changing their way of life. They started to grow rice.
Detailed explanation-3: -Rice is believed to have been domesticated ∼9, 000 y ago, although debate on its origin remains contentious. A single-origin model suggests that two main subspecies of Asian rice, indica and japonica, were domesticated from the wild rice O. rufipogon.
Detailed explanation-4: -The current scientific consensus, based on archaeological and linguistic evidence, is that Oryza sativa rice was first domesticated in the Yangtze River basin in China 13, 500 to 8, 200 years ago.