Which ideas did you include in your answer? Check all that apply. The unknown mineral is harder than the minerals that it was able to scratch.
The unknown mineral is not harder than the mineral that it was not able to scratch.
The unknown mineral is a relatively hard mineral.

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?