The full review of REpLICa by Marilyn Kaye

Replica is a sci-fi book series by Marilyn Kaye, containing 24 books.
The story centers on Amy Candler, a girl who discovers she is not only a clone, but is also gifted with genetically altered eminence. Overnight, she can run faster than anybody and see farther than anybody. This extends to other abilities; for instance, she can do complicated twists on the uneven bars in gymnastics.

She wants to locate the other clones, but she must be careful, for the evil masterminds who created her are out to get her.

While on a trip to New York, Amy is captured along with seven other of her clone sisters. One of them is killed in the experiments performed on the clones, but later in the series the defective 13th clone (Aly) is mistaken for the dead one and must do her best to survive the Organizations next round of tests they throw at the 12 remaining clones.

Since the Organizations plan is to create a mastermind race or superior clones, they had created 12 male copies 4 years before the Amy Project, called the Andy Project. Amy #7, the Amy clone the series follows, meets Andy #6 on a camping trip. She bumps into him throughout the rest of the series.

I got this from Wikipeida. I wrote part of it. There's more, but it ruins the series. if you want to read the whole thing, go to www.wikipedia.com and search REPLICA (BOOK SERIES). I would advise against that if you havn't finished the series.