Does crossing over occur in mitosis or meiosis ? explain what happens during this process!

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

According to the cladogram, which organisms have roundworms as a common ancestor?