2. In guinea pigs, black eyes are dominant to red eyes. Choose a letter combination for each phenotype. underline ( )=black eyesunderline ( )=black eyesunderline ( )=red eyes 3. In a guinea pig cross for eye color a Bb-guinea pig was bred with a bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? 4. In a guinea pig cross for eye color a BB guinea pig was bred with a bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? 5. In a guinea pig cross for eye color a Bb guinea pig was bred with a Bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? In guinea pigs, black eyes (BB, Bb ) are dominant to red eyes (bb)Short hair (HH,Hh) is dominant to long hair (hh) 6. A guinea pig with long hair (hh) is crossed with one that has short hair (H H). What percentage of the offspring will have short hair? 7. A guinea pig with long hair (hh)is crossed with one that has short hair (H h). What percentage of the offspring will have short hair?

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2. In guinea pigs, black eyes are dominant to red eyes. Choose a letter combination for each phenotype. underline ( )=black eyesunderline ( )=black eyesunderline ( )=red eyes 3. In a guinea pig cross for eye color a Bb-guinea pig was bred with a bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? 4. In a guinea pig cross for eye color a BB guinea pig was bred with a bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? 5. In a guinea pig cross for eye color a Bb guinea pig was bred with a Bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? In guinea pigs, black eyes (BB, Bb ) are dominant to red eyes (bb)Short hair (HH,Hh) is dominant to long hair (hh) 6. A guinea pig with long hair (hh) is crossed with one that has short hair (H H). What percentage of the offspring will have short hair? 7. A guinea pig with long hair (hh)is crossed with one that has short hair (H h). What percentage of the offspring will have short hair?

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2. Let's use "B" for the dominant black eye allele and "b" for the recessive red eye allele.* **BB** = black eyes* **Bb** = black eyes* **bb** = red eyes3. A Bb guinea pig (black eyes) crossed with a bb guinea pig (red eyes): * Possible combinations: Bb, Bb, bb, bb * **50%** of the offspring should have black eyes (Bb). * **50%** of the offspring should have red eyes (bb).4. A BB guinea pig (black eyes) crossed with a bb guinea pig (red eyes): * Possible combinations: Bb, Bb, Bb, Bb * **100%** of the offspring should have black eyes (Bb). * **0%** of the offspring should have red eyes.5. A Bb guinea pig (black eyes) crossed with a Bb guinea pig (black eyes): * Possible combinations: BB, Bb, Bb, bb * **75%** of the offspring should have black eyes (BB, Bb). * **25%** of the offspring should have red eyes (bb).6. A guinea pig with long hair (hh) is crossed with one that has short hair (HH): * Possible combinations: Hh, Hh, Hh, Hh * **100%** of the offspring will have short hair (Hh).7. A guinea pig with long hair (hh) is crossed with one that has short hair (Hh): * Possible combinations: Hh, Hh, hh, hh * **50%** of the offspring will have short hair (Hh).

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