Q299
In sporophytic system of self-incompatibility full fertility will result from a cross between
A.
S1S2 × S1S3
B.
S1S3 × S3S4
C.
S1S2 × S3S4
D.
S2S3 × S1S2
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
In the sporophytic system of self-incompatibility, full fertility will result from a cross between S2S3 × S1S2.Sporophytic self-incompatibility (SSI) is a self-pollen recognition system that enforces outcrossing in plants.
Recognition in SSI systems is typically controlled by a complex locus (S-locus) with separate genes that determine pollen and stigma specificity.