Codominance Punnett Squares

What type of inheritance occurs with two traits are dominate together, and they both show up in the phenotype?

In mice, there is a lethal mutation that causes embryos with the genotype YY to die before birth. Baby mice with the genotype YG appear yellow, and GG mice are gray. If 2 yellow mice mate, what is the chance their offspring will die before birth?

In shorthorn cattle, red and white are co dominate, producing a color called roan (red and white spotted). If a roan bull and white cow are bred, what are the chances of having white offspring?

In some chickens, black (B) and white (W) are codominant. The heterozygous condition is called erminette (BW), producing black and white feathers. If a black chicken and erminette chicken breed, what are the chances of producing a black chicken?

In some chickens, black (B) and white (W) are codominant. The heterozygous condition is called erminette (BW), producing black and white feathers. If two erminette chickens breed, what are the chances of producing an erminette chicken?

In shorthorn cattle, red and white are co dominate, producing a color called roan (red and white spotted). If a roan cow and roan bull are bred, what are the chances of having white offspring?

In some chickens, black (B) and white (W) are codominant. The heterozygous condition is called erminette (BW), producing black and white feathers. If a black chicken and erminette chicken breed, what are the chances of producing a erminette chicken

In some chickens, black (B) and white (W) are codominant. The heterozygous condition is called erminette (BW), producing black and white feathers. If two erminette chickens breed, what are the chances of producing a white chicken?

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