Mutations can occur in the chromosomes of all types of cells. mutations that are passed on to offspring must occur in a) gametes. b) body cells. c) stem cells. d) somatic cells. submit

Because of its structure the cell membrane is known as a phospholipid ? a.bilayer b.molecule c.fluid d.barrier

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

When analyzing tree rings, what do scientists assume a thin ring indicates?