What is the common ancestor of mammals and turtles?

Its a dinosaur. The origin of turtles is still pretty much a mystery. The  earliest turtles were aroud some 200 million years ago. Two theories are presented: Turtles are members of an ancient group of reptiles called Parareptilia.

What is the difference between cytokinesis in plant and animal cells? animal cells dived by a cleavage furrow. plant cells divide by a cell plate that eventually becomes the cell wall. cytoplasm and cell membranes are necessary for cytokinesis in both plant and animals.

Yes yes yes very good