Final answer:
Young Jerry's curiosity about his father's physical characteristic is not explicitly stated, but he may be contemplating aspects related to his father's social success and appearance shaped by life experiences.
Step-by-step explanation:
The physical characteristic of his father that young Jerry wonders about is not explicitly detailed in the provided text. However, based upon the context given, it can be inferred that young Jerry is curious about his father's success and social standing, which may manifest in his father's appearance, mannerisms, or behaviors that have been shaped by his experiences. The texts provide insights into considerations of wealth, social status, and heritage, rather than specific physical traits.