Suppose a female dog has two litters: the first developed when the mother had little food,while the second developed when food was abundant.Both litters had the same father and were reared in similar environments.The offspring of the first litter are much more fearful than their counterparts in the second litter.What is the most likely explanation for the difference between the two litters?

Question

Quizplus · Accepted Answer

The difference in the offspring's behavior is most likely due to epigenetic marks, which can be influenced by environmental factors such as nutrition. The first litter may have experienced changes in epigenetic marks that are associated with increased fearfulness, compared to the second litter. The other choices such as changes in DNA sequences, behavioral imprinting, biological determinism, or pheromones are less likely to explain the observed difference in behavior between the two litters.

Suppose a Female Dog Has Two Litters: the First Developed