Mouse crosses:
Cross1: Females with normal tail crossed with male with long tail. All F1 offspring have long tails.
Cross2: Females with long tail crossed with male with normal tail. All F1 offspring have normal tails.
Cross3: F1 females from cross 1 are crossed to male with normal tail. All offspring have normal tails.
Cross4: F1 males from cross 1 are crossed to female with long tail. Half of the offspring have normal tail and half have long tail.
Any idea what kind of inheritance pattern is this? I think it is Non Mendelian inheritance, but failed to draw out which one is it.