<span>Dinosaurs were common in the Jurassic period, but during the Cretaceous period they went extinct. Pangaea had fully split by the Cretaceous period and angiosperms had developed. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Answer:
Mechanical, Im assuming because you didnt provide anything else
Explanation:
True,
genotypes are the genes of an organism for one specific trait
so without them you would not be able to predict the offspring thus defeating the purpose of the punnett square