The finch that usually preys on insects located in cracks would most likely have beaks that are shaped as sharp and thin. To reach into crevices, a small and pointy beak will fit and make it easier for the finch to capture its small prey.
The answer is polygenic inheritance.
Polygenic inheritance is responsible for traits that are controlled by two or more genes. It is also called multiple gene inheritance. Examples of polygenic inheritance are height, weight, skin color, eye color.
Since a great number of genes control one trait, it is expected that each one has<span> a relatively small effect</span>
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B is the correct answer
Explanation: