Fragments of DNA Extracted from the Remnants of an Extinct

Multiple Choice

Fragments of DNA extracted from the remnants of an extinct vertebrate, the woolly mammoth, have been amplified and sequenced. Currently, the most efficient and ethical use of these products is ________.

A) to introduce certain mammoth traits into relatives, such as elephants
B) to clone live woolly mammoths so that their characteristics can be compared with living relatives
C) to examine size and gene density to understand the reasons why mammoths went extinct
D) to better understand the evolutionary relationships among members of related taxa