“Look, what happened to Enzo is gonna haunt you and her for the rest of your lives. But the you standing with me right now, the you that's gonna marry Caroline Forbes tomorrow, the you that I have known for almost 200 years, you didn't do it. Evil, nasty, Ripper Stefan did it, and you are not him. You hear me?“ Who says this

The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?

Sperm are ejaculated from the corpora cavernosa of the penis. true or false