What are two reasons why elephants would be a bad choice for studying genetic inheritance?

The reasons why elephants are considered to be a bad choice for studying genetic inheritance are the following;

- Elephants has one or two offspring in which they produced in their lifetime and by that, there is only little information that could be gained and collected from it.

- Elephants live for a long time in which one generation is not applicable for studying because their generation span is slowly passing which is not considered to be practical for the study.