How many dominant alleles i needed for an expression of a dominant phenotype

Hello,

The answer is "two".

Reason:

The number needed to have a dominate allies is two. You need two allies in order to have a relationship that helps form the genes and also the phenotype which is the physical features of a organism therefore the answer is two!

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

It is used to during sexual reproduction between humans

I'm sorry to hear that. i will try to answer your other questions if it is within my ability. : )answers: my favourite colour is black.my favourite food is pasta.my favourite school subject is english, but i do also like lunch time.my least favourite subject is history as well as geography. i have currently garnered a quite equal hatred for both of the subjects.what about you? well, you for the points. : )