In considering this cross (yyrr and yyrr), the genotype ratio is: yyrr; 2yyrr; 2yyrr; 4yyrr; yyrr; 2yyrr; yyrr; yyrr; yyrr. true or false?

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

The cluster of developing cells from conception until birth is called an

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?