Question

All of the following EXCEPT the resistance of _________ demonstrate artificially selected resistance. A) beef cattle, to "shipping fever", B) many agricultural wheat varieties, to drought and fungus, C) Antarctic fish to freezing, due to antifreeze proteins in their blood, D) many common grasshopper species to pesticides, such as diazinon, sevin, and others,

Answer 1

Answer choice C.

All the other answers arose with artificially created resistance. That makes them incorrect.

Hope that helps!

Answer 2

Correct answer: C). Antarctic fish to freezing, due to antifreeze proteins in their blood

Antarctic fish possess antifreeze proteins that prevent them from growing and they also prevent ice from melting. The ice crystal stays intact even when fish containing them are warmed past to their expected melting point.

The protein binds to the ice crystal that is known to accumulate inside their bodies that resist melting even when the temperature warms up.

So, it is a result of evolution, Hence the answer would be C.