You are creating a pedigree to trace freckles, a recessive trait, in a friend's family. you find out which of her family members have freckles and which do not. when you complete the pedigree, what can you learn about members of your friends family that you could not tell just by looking at them.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.