After crossing two plants,the progenies are found to be male sterile. The phenomenon is found to be maternally inherited and is due to some genes which reside in

The expression of genes for the production of milk in only females is a

When a trait is inherited only from the female parent,it primarily indicates:

Epistasis differs from dominance because.......

In plants,cytoplasmic male sterility is generally located in which of the following?

In a cross between white-flowered parents,$F_1$ progeny was uniformly purple-flowered. The $F_2$ progeny showed a phenotypic ratio $9:7$ between purple-flowered and white-flowered plants. The above result indicates that the flower colour is controlled by