As predicted by the Punnett square, 100% of the offspring have black fur for this cross
Each parent contributes one allele for fur color to each offspring. In this case, both parents have a dominant allele for black fur (BB).
The dominant allele for black fur (B) masks the recessive allele (b) for brown fur. This means that even if an offspring inherits one allele for brown fur from each parent, the black fur will be the dominant trait and the offspring will have black fur.
Since both parents are homozygous for black fur (BB), all of their offspring will also be homozygous for black fur (BB). Therefore, all 10 offspring will have black fur.
See text below
Breed ten offspring mice.
Parents (Homozygous for Black Fur)
BB BB
In the data table, record the number (out of 10) and percentage (out of 100%) of each phenotype in the rows "Simulated Number" and "Simulated Percentages respectively."
As predicted by the Punnett square, -----% of the offspring have black fur for this cross.