Are organisms that reproduce by parthenogenesis all clones

I am so confused!! Take for example, the whiptail lizard: all female, reproduce asexually by parthenogenesis. The problem is, there's no other parent to provide new DNA. So are all of the offspring clones? How can there be any genetic variation within this species? I thank you for your help and insight.

In strictly parthenogenic linse such as whiptails, the offspring are clones and there is little genetic variation. Not all organisms are strictly parthenogenic. Female bees and komodo dragons cam produce males by parthenogenesis, then mate with the males, retaining recombination.

A study of fish in streams showed that the first colonizers tend to reproduce sexually, but over time parthenogenesis become more common as they are slower to adapt to conditions, but once adapted, the stability and lack of variation is a benefit.