12. How to find the number of
pair of alleles involved in
polygenic inheritance using
the number of phenotypical
forms of the trait they
condition?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Considering “p” the number
phenotypical forms and “a” number
of involved alleles the polygenic
inheritance. The p= 2a + 1
then applied.

(Many times is not possible to
precisely the number of
forms, p, due to
multigenic feature of the ,
since often the observed of
phenotypes seems to a continuum
or the suffers environmental
influence.)