Answer:So yes,humans and other mammals (like dogs) have same immune system. Differences may occur in the protein structures, but they all come in same family and work similarly like humans.
Explanation: Are animal immune systems different from humans? - Quora
https://www.quora.com/Are-animal-immune-systems-different-from-humans
I think the right answer is b
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Explanation:
Answer:
Using statistics!
Explanation:
If the predecessors had genetically transmitted disease,or specific features,the family tree is useful in identification and better understanding.