A yellow guinea pig, when crossed with a white one, always gives cream offspring. Crossbreeding of cream pigs

A yellow guinea pig, when crossed with a white one, always gives cream offspring. Crossbreeding of cream pigs with each other always gives a split of 1 yellow: 2 cream: 1 white. Determine: 1) the nature of color inheritance; 2) the probability of the birth of white guinea pigs from crossing cream.

1) Inheritance of a trait by the type of incomplete (intermediate) dominance;
2) the probability of the birth of white guinea pigs from crossing cream 1/4.

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