Answer:
Errors that appear in one copy can be copied to all other copies of the book.
Step-by-step explanation:
While printing a book, an error made will result in printing all the books with that error. Same case occurs in mutations in a genome. Certain mutations are heritable. This means that a change in a DNA sequence at a particular location will be seen in the children also.
Not all mutations are negative, some might have a positive influence also.