Answer:
Signposts that determine the fate of cells.
Explanation:
Embryos for humans and other animals often look alike at certain developmental stages because they share ancient genes. This expression means that a more advanced organism, like humans, will resemble less advanced species during it's development stages.
Answer:
Kingdom 4
Explanation:
This kingdom is the only one with the ability to be heterotrophic or autotrophic.
The answer is genetic drift.