True or False, it's likely that organisms other than LUCA (Last Universal Common Ancestor) existed alongside LUCA before the divergence of bacteria from archaea and eukaryotes.
True; their evolutionary lines just went extinct so there is no evidence of them
True; each one diverged into their own domains that we see today
False; by definition, LUCA is the only thing to exist back then
False; while LUCA may have looked different and evolved over time, it was the only type of organism around
LUCA, by definition, is the most recent common ancestor of all the organisms living on Earth. Scientists have not found any fossil evidence of LUCA. They have only been studied by comparing the genomes of their descendants.
Before the divergence of bacteria from archaea and eukarya, there existed other organisms alongside of LUCA. Their evolutionary lines, however, went extinct, which is why there is no record of them. Hence, LUCA was not the only organism back then.
So, the given statement is TRUE. The reason is that their evolutionary lines just went extinct so there is no evidence of them.
True or False, it's likely that organisms other than LUCA (Last Universal Common Ancestor) existed alongside...
Which of the following Domains of Life are descendents of the Last Universal Common Ancestor (LUCA)? Bacteria Plantae Archaea Eukarya Monera