A mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring.
Sometimes animal offspring look very different from their parents.
A mutation in the sex cells of a parent can cause children to look very different from their parents.
A mutation in what of a parent can cause children to look very different from their parents?

  chromosomes
  sex cells
  fur and fat
  coded genes
  hormones
  sperm
  epidermal
  Enzymes