The pattern of inheritance that was exhibited is <span>epistasis. E</span>pistasis<span> is the
phenomenon of the effect of one gene being dependent on the presence of one or
more 'modifier genes', the genetic background. Thus, </span><span>epistatic </span>mutations have different effects in combination than
individually. I am hoping that this answer has satisfied your
query and it will be able to help you in your endeavor, and if you would like,
feel free to ask another question.