Biology Genetics Q. HELP!
A certain breed of mouse can have fur that is either black or brown. A mouse breeder performs a test cross using a brown mouse to determine the unkown genotype of a black mouse. There are four offspring produced by the cross. What conclusion can be drawn?
a) If the black mouse is homozygous, one of the four offspring must be brown
b) If the black mouse is heterozygous, three of the four offspring must be black
c) The black mouse must be homozygous, if all four offspring are black
d) The black mouse must be heterozygous, if any of the offspring are brown
a) If the black mouse is homozygous, one of the four offspring must be brown
b) If the black mouse is heterozygous, three of the four offspring must be black
c) The black mouse must be homozygous, if all four offspring are black
d) The black mouse must be heterozygous, if any of the offspring are brown
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(edited 10 years ago)
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