In cat, the gene for black coat is dominant to the gene for white coat. A heterozygous black cat is crossed with a white cat. which of the following is true about the ratio of the offspring from the cross?

Question

In cat, the gene for black coat is dominant to the gene for white coat. A heterozygous black cat is crossed with a white cat. which of the following is true about the ratio of the offspring from the cross? 
Black coat, White coat 
A. 1,3 
B. 3,1 
C.4,1 
D.4,0 
can you please give me an explanation for this question. thanks in advance.

bobpursley · Answer

The first sentence is wrong. White is not a color in cats. It embarrasses me that you were told that.
http://ib.berkeley.edu/courses/ib162/Week3a.htm
http://en.wikipedia.org/wiki/Cat_coat_genetics
http://kids.cfa.org/understanding-cat-colors.pdf

Didi · Answer

well thanks for the info. but how do i answer this question.