One strain of tree bears 20 pound kumquats. Another strain bears 4 pound fruit. Assume that this trait is controlled by 4 gene loci. From a cross between the huge and normal strains, what weight fruit will the progeny have?
a. 12
b.16
c. 10
d. 4
e. 18
Following our simplified model of polygenic inheritance, what is the contribution per allele?
a. 1
b. 2
c. 4
d. 6
e. 10