Looking for classes? Ksquare Career Institute, Bengaluru →
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it?
A
Bb
B
BB/Bb
C
BB
D
bb
Detailed Solution
To find whether a black-seeded plant is BB or Bb, a test cross is performed with the homozygous recessive (bb) plant.
If all offspring are black, the plant is BB; if half are black and half white, it is Bb.