The Cambrian explosion. Trilobites were found because of their hard shell, unlike soft bodied creatures.
For the first 12 hours after conception, the fertilized egg remains a single cell. ... During the first 8 or 9 days after conception, the cells that will eventually form the embryo continue to divide
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50% AB 25% A 25% B I think sorry if it’s wrong
Yes, <span>the information crisis in a cell is solved by the replication of the DNA before the cell division. The larger a cell gets, the more demands it places on its DNA. Eventually the DNA cannot meet the cells needs. </span>