What is the collective term for all the cytoplasmic genes present in the cytoplasm?

Lethal genes are:

In which type of inheritance would you expect a maternal effect in more offspring?

In plants,where are the genes for cytoplasmic inheritance located?

The colour of the endosperm in maize is an example of:

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