Imagine researchers following up on Seeley's study brought some flat periwinkles from Appledore Island into the lab to test for heritability. What results could they observe that would support the hypothesis that shell thickness is heritable in these snails? Consider results they could directly observe without using molecular techniques. Drag the labels to the target that correctly answers each question.

If slim shelled snails have dainty shelled posterity and thick shelled snails have thick-shelled posterity then this is a decent proof that shell thickness is heritable.  

In the genuine investigation they have watched however at first the number of inhabitants in snails had an arbitrary conveyance of shell thickness in the long run the nearness of a crab the predator lead to the determination of thick-shelled snails with the end goal that they are not consumed.Thickness of the shell is certain a heritable factor by qualities yet the choice or development of thick-shelled snails over the time is an unadulterated choice.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.