Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
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Question: Question: The metacarpophalangeal joints in the finger are examples of what kind of joints? Answer: condyloid

Answer: Figure 38.30 The metacarpophalangeal joints in the finger are examples of condyloid joints. (credit: modification of work by Gray's Anatomy).

Question: Question: Most food chains and webs have a maximum of how many trophic levels? Answer: 4

Answer: A trophic level is a feeding position in a food chain or food web. Most food chains and webs have a maximum of four trophic levels. There is less energy and biomass at higher trophic levels.

Question: Question: The lifecycle of an ascomycete is characterized by the production of what during the sexual phase? Answer: asci

Answer:
Figure 24.13 The lifecycle of an ascomycete is characterized by the production of asci during the sexual phase. The haploid phase is the predominant phase of the life cycle.