Final Answer:
In the parental combination AaBbCC × AABbCc, all offspring will express the dominant trait for the traits governed by genes A and B, but for the trait governed by gene the expression will depend on the specific alleles inherited.
Step-by-step explanation:
In the given parental combination, the genotype AaBbCC is crossed with AABbCc. The uppercase letters represent dominant alleles, and the lowercase letters represent recessive alleles. For genes A and B, where the parental combinations have at least one dominant allele (Aa and Aa, Bb and Bb), all offspring will express the dominant traits because dominance results in the expression of the dominant phenotype.
However, for gene C, where the parental combination has alleles CC and Cc, the expression will depend on the specific alleles inherited by each offspring. If an offspring inherits the dominant allele C from the parent AaBbCC and the recessive allele c from the parent AABbCc, it will express the dominant trait for gene C.