<em>crossing-over affect evolution...
<u>reason:
</u>during crossing-over chromosomes exchange their genetic information...
because of this variations occur in new generation,, in new generation some characters are from maternal chromosomes and some are from paternal chromosomes... </em>
I believe it would be the reptile kingdom!
The correct answer is catalyst. Hope that helps.
Answer:
Buffer
(a brainliest would be appreciated)