The correct response is food availability. The availability of food at different heights in trees created a selective advantage for giraffes with longer necks, allowing them to access more food than those with shorter necks. Over time, this trait was inherited and became more common in the population.
Millions of years ago, the ancestors of giraffes had short necks and used to eat leaves from the bushes on the ground. A genetic mutation caused one giraffe's neck to be taller. This long-necked giraffe was able to eat leaves that were higher up on trees. This gave it an advantage as it was able to access more food than other giraffes. Over millions of years, all of the giraffes became long-necked. Which type of environmental factor caused this mutation to be inherited? (1 point)Responsesfood availabilityfood availabilityradiation exposureradiation exposureexercise requirementexercise requirementpolluted environment
1 answer