Mutations are one way that genetic variation is introduced within a species. Which statement describes the role of mutations in evolution?

How does the nervous system affect the excretory system?

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.