The ability to roll the tongue is dominant over the ...

The ability to taste PTC (website with more information) is due to a dominant trait. Create a Punnett square for a man who is a taster and a woman who is a non-taster. Assume that the father’s mother was a non-taster. In humans, the allele for six fingers (F) is dominant to the allele for five fingers (f). ................
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