u
unclonable segments 264
uracil N-glycosylase 214
uv light 75
V
vectors 261
- blunt-ended 279
- selection 283
valtage 72
w
walking efficiencies 263
wheat germ extract system 369
X
Xenopus
- laevis
- - oocytes 260, 312, 319
- - system 312
- toad 314
X-Gal 304
XLI - blue 233
xylene cyanole 74
y
Y1088 298
Y1090 298
SUBJECT INDEX
387
YACs (yeast artificial chromosomes) 99, 103, 261, 262, 333
- recombinant 323
z
A-ZAP 291, 297
zygotene 354