Hello.
Man cannot scientifically recreate a heart or lung in a lab. It just doesn’t work that way. Therefore, your answer is B.
I hope this helps you!
Have a wonderful day.
~Brooke❤️
<span>One swedish study of genetic factors in the cause of dementia found that the concordance rate for monozygotic twins was over50 percent. The monozygotic twins in mostly 50 percent are living in the world in search result.</span>
This type of mutation would be called a deletion
Hope this helps :)
Answer: The literal reason would be because our ancestors did. The ancestors of all modern mammals had five digits on each limb up to 360 million years ago.
Explanation: