What is the “molecular clock”? Is it reasonable to assume that it exists?

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods

Select the correct answer. for their summer holiday, jane and her family are visiting places surrounding the mediterranean sea. which type of biome is jane and her family visiting? a. rainforest b. shrubland c. tundra d. coniferous forest reset next

Which type of mutation occurs in reproductive cells and can be passed to offspring? somatic mutation germline mutation point mutation frameshift mutation