In which phase(s) of mitosis do the chromosomes contain a single copy of dna?

Why do carbohydrate molecules function so well as fuel for the body?

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment