Answer:
its affected by the number of chromosomes they have
So, lets say that the letter representing freckles is F for dominant or f for recessive
Clearly, the mother is F, while the father is f. which most likely gives the girls the genotype of Ff with one dominant freckle allele each which means they display the trait.
For many species, there are often regional differences in their genes, although most of the time this differences aren't noticeable in their outward appearance.
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