Explanation:
info gathered b4 and after an experiment is used to confirm or disprove a hypothesis ( educated guess).
Answer:
The most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago. ... 6,331 groups of genes common to all living animals have been identified; these may have arisen from a single common ancestor that lived 650 million years ago in the Precambrian.
The answer is c because they’re more similar then a and b
Answer:B
Explanation:
The last pair are sex chromosomes. Different pair is XY which is a male chromosome. Same pair is XX which is Female
