Why would two different species have similar features or behaviors?
a. similar dna
b. similar mutations
c. similar environmental pressures

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Does all the energy stored by the phytoplankton reach the top level of the pyramid

4. multiple crosses were made between true-breeding lines of black and yellow labrador retrievers. all the f1 progeny were black. when these progeny were intercrossed, they produced an f2 consisting of 91 black, 39 yellow and 30 chocolate. a. propose an explanation for the inheritance of coat color in labradors. b. propose a biochemical pathway for coat color determination and indicate how the relevant genes control coat coloration.