Discussion:
1. in corn, the following recessive genes have been identified on chromosome 3:
yg = yellow-green seedlings
wx = waxy endosperm
bz = bronze color
From a three-point testcross between plants heterozygous for all three genes and plants homozygous recessive for all three genes, the following data were obtained:
yellow-green 6
yellow-green, waxy 720
wild type 56
bronze, waxy 13
bronze 681
yellow-green, bronze 25
waxy 31
yellow-green, bronze, waxy 42
a. Which gene is in the middle?
b. What is the distance between genes yg and wx?
c. What is the distance between genes wx and bz?
d. What is the distance between genes yg and bz?