Re: Is there DNA/genetic similarity between life-forms ?

"Robert Finch" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> Hi,

> In other words, does nature tend to optimize towards the same solution in
> genetic terms, when it tries to fill the same evolutionary niche ? (Even
> when starting from a different point of origin).
> 
Similar forms not having a common ancestry result from convergent evolution.
Placental mice and marsupial mice are no more closely related based
the fossil record and DNA sequences than any two pacental and marsupial animals
but have a similar morphology and behavior. Evolution has come up independently
with the same solution many times. Think about wings- pteryldactyls,
insects, birds, and bats.

Eli Siegel