Erwin chargaff observed that the proportions of adenine (a) and thymine (t) bases were always equal, as were the proportion of guanine (g) and cytosine (c). chargaff’s observation suggests which of the following statements?

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.

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.

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome