Similar DNA may support "common" ancestry. ☺
Crossing over occurs at the four-strand stage when two homologous chromosomes, each consisting of a pair of sister chromatids, are paired. Each crossover involves just two of the four strands and generates two recombinant strands.
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Insulin is produced by beta cells of the pancreas for storing and disposing of the glucose in various parts of the body like liver. This activity is a differentiated function of the beta cells of pancreas only. Although gene for insulin production is present in all cells, it is expressed only in the beta cells. Hence, it is a differentiated function.
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The answer is
Padded Toes for movement
Green skin to hide from predators
To maintain homeostasis they have permeable skin
To obtain food they have a long tongue to catch it.
Explanation:
