False, <span>What a punnett square does, is it tells you, given the genotypes of the parents, what alleles are likely to be expressed in the offspring</span>
By contracting, muscles pull on bones and allow the body to move. Muscles can only contract. They cannot actively extend, though they can move or relax back into the non-contracted neutral position. Therefore, to move bones in opposite directions, pairs of muscles must work in opposition
