Explain the relationship between DNA and chromosomes

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur