Question

PLZ HELP 13+points
A population of lizards lived in an ecosystem that was prone to flooding. After many generations, most of the lizards in the population had longer legs than their ancestors, which helped them flee from floods. Which statement best explains this change? *

A)The lizard genes spontaneously mutated to address the flooding threat.
B)Genetic variation among lizard limbs allowed for natural selection to occur.
C)The limbs were artificially selected because humans probably caused the flooding.

Answer 1

Answer:

B)Genetic variation among lizard limbs allowed for natural selection to occur.

Explanation:

Natural selection is the phenomenon in which creatures evolve as time goes on. This evolution occurs when the species experiences a certain natural challenge that it can adapt to. Lizards that had short legs died in the floods while the lucky longer legged lizards were able to pass on their genes to the next generation. This is Natural Selection in action.

Answer 2

Answer:

B

Explanation:

When the lizard go through natural selection, they evolve to the threat of flooding. Henceforth, they grow longer legs. The genes for longer legs will continuously be passed down to more and more generations.