Step-by-step explanation:
B. A trait without a clearly dominant or recessive form
Non-Mendelian traits are those that do not follow Mendel's laws of inheritance, which are based on the interactions of dominant and recessive alleles. In non-Mendelian inheritance, the patterns of inheritance can be more complex and not easily explained by simple dominant and recessive relationships. A trait without a clearly dominant or recessive form suggests that its inheritance pattern might involve incomplete dominance, codominance, polygenic inheritance, multiple alleles, or other factors that deviate from Mendelian principles.