A pure-breeding white dog and a pure-breeding black dog are crossed. You would expect a ratio of ¾ black : ¼ white in the offspring. However, you find that you get a ratio of ⅔ black : ⅓ white, with equal numbers of males and females in both groups. What genetic inheritance pattern can explain these results?

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The trait is sex-influenced.

  

The trait is sex-limited.

  

The allele for black coat is lethal.

  

The alleles are codominant.

 

asked May 5, 2013 in Genetics by GeneX ~Top Expert~ (7,947 points)
    

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The allele for black coat is lethal.

answered May 5, 2013 by GeneX ~Top Expert~ (7,947 points)

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