A. Twelve cells with 16 chromosomes each
Answer: In prehistoric art, finger flutings are lines that fingers leave on a soft surface. Considered a form of cave painting, they occur in caves throughout southern Australia, New Guinea, and southwestern Europe, and were presumably made over a considerable time span including some or all of the Upper Paleolithic.
Explanation:
Hox genes are: Hoxd9,10,11,12 and 13. Hox genes are responsible for limb bud formation. Hoxd9 influences thumb, Hoxd9 and 10 index fingers and so on.
Hoxd10 has ectopic effect on the development of the mouse limb bud index finger. As a consequence index finger in formed in place of thumb.