What is the best topic sentence for an article about whether or not certain genes play a favorable role in human evolution?

"Jumping genes," or transposable elements, are DNA sequences that have the ability to replicate and move from one chromosome to another.
Nobel laureate Barbara McClintock first reported this phenomenon in 1951, but few other scientists believed her findings at the time.
Jumping genes have the unsavory reputation of causing genetic mutation or cancerous cell growth.
Challenging the notion that jumping genes are "junk" genes, recent b

Respuesta :

You question is incomplete, because I cannot read the final option - it isn't finished.
However, based on the options I can read, the best  sentence for an article about whether or not certain genes play a favorable role in human evolution is the third one - jumping genes have the unsavory reputation of causing genetic mutation or cancerous cell growth.
The other two options say nothing about the role of certain genes, they just state some facts.