Respuesta :
Well if you do the box you will get;
25% of YY
50% of Yy and
25% of yy
I don't know which one is purebred dominant so if you know let me know. But this should help you.
Have a great day!
So if you consider a punnet square of two heterozygous parents Yy x Yy
Y y
Y YY Yy
y Yy yy
Now to break that down a little bit: a purebred offspring would have to be either homozygous dominant or recessive and that would either be YY or yy.
Since you know that a y is a recessive gene and a Y is a dominant gene you can look back to the punnet square and see
YY -25% (homozygous/purebred dominant)
Yy- 50% (heterozygous)
and yy- 25% (homozygous/purebred recessive)
