Which of the following actions was most likely involved in the development of the transgenic crop plants ?

i think the miocene epoch spans the time from 23 million to 12 million years ago.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]