Question 21N.1.HL.TZ1.13
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.1.HL.TZ1.13 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Question number | 13 | Adapted from | N/A |
A nucleus was removed from a cell of sheep P and fused with a denucleated egg cell of sheep Q. This was transplanted into the uterus of sheep R, which gave birth to Dolly.
[Source: Photo courtesy of The Roslin Institute, The University of Edinburgh, Roslin, Scotland, UK, n.d. Dolly the Sheep
in a field at The Roslin Institute. [image online] Available at: https://www.livescience.com/57961-dolly-the-sheepannouncement-
20-year-anniversary.html [Accessed 23 March 2020].]
Which describes Dolly?
A. A clone of sheep P, because Dolly was formed from the nucleus of its udder cell
B. A clone of sheep Q, because Dolly was formed from one of its egg cells
C. A clone of sheep R, because Dolly developed in its uterus
D. Not a proper clone, as more than one sheep was involved in the development
[1]
A
