Q873
A maintainer line is
A.
Male fertile and can restore fertility
B.
Male sterile but can restore fertility
C.
Male sterile and cannot restore fertility
D.
Male fertile but cannot restore fertility
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
A maintainer line is Male fertile but cannot restore fertility.A male fertile line is known as the maintainer line or 'B' line and 'the male sterile line is also known as 'A' line.
In a maintainer line (M), its cytoplasm is male fertile (normal) which interacts with a recessive male-sterile nuclear gene to jointly perform male-fertile phenotype.