Some signals, like growth factors, affect multiple pathways, activating some proteins and inhibiting others in the course of eliciting specific responses. Ras is an oncogene and over activation of Ras is associated with aggressive tumor growth. Which of the following would be expected in response to a growth signal activating Ras that is sustained?

A) apoptosis first, then cell cycle, then cell growth
B) cell cycle first, then cell cycle arrest, then metabolism
C) metabolism first, then apoptosis, then DNA replication
D) cell growth first, then DNA replication, then cell cycle arrest

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

can i get the brainliest pls

explanation:

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )