Biology Forums - Study Force

In certain breeds of hamsters, females can be black, orange, or a black-and-orange mosaic called tortoise-shell, where small patches of black and orange fur are interspersed (see image at right). However, males of these breeds can be either black or orange but never tortoise-shell. For example, in a parental cross between orange females and black males, all of the F1 female offspring are tortoise-shell, but all of the F1 males are orange.  

A. Using the information provided above, propose a hypothesis that would explain why tortoise-shell coloration occurs only in females, and briefly explain. As part of your answer, please produce the Punnett square in the space provided for the parental cross described above and explain your notation system

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