View Single Post
Old 04-04-2006, 10:58 AM   #31 (permalink)
Ustwo
Pissing in the cornflakes
 
Ustwo's Avatar
 
Quote:
Originally Posted by basmoq
Ok, speaking as a scientist myself, I must say that xepherys is completely wrong in his statement that we have evolved protection against UV (please take a course in basic genetics) UV rays cause Thymine Dimers to form in our DNA, which prevents DNA Polymerase from being able to read the strand of DNA beyond the dimer. Our cells have developed the ability to correct Thymine dimers, but it takes time, the more dimers you create (ie. the more time you spend in the sun), the more likely you are to not be able to keep up with the damage, leading to errors in the reading of your DNA. Now some errors make no difference to protien function, however, some cause cell death. Accumulate enough errors in a single cell and it can lead to skin cancer. Please do not use a rudimentary knowledge of scientific theory to prove your own theories, and don't believe anything you read on the internet, go to scientific journals if you want real science, it is very common for journalists to completely misstate the significance of a journal article. If you would like a more detailed description of the problem, PM me and I will dig up some info out of one of my medical texts. BTW, the statements about darker skin listed above are quite true
Ahhhhhh memories......

T=T.....

S.O.S. repair mechanisms.........

Ahhhhhhhhhhhhhhhhhhhhhhh die foul demons of biochemistry.

Hehe god its been a long time. Whats sad is I remember I KNEW all the repair mechanisms for a thymine dimer, I'm sure I was tested on them, but I can't recall them off the top of my head. The only thing that popped in was the sos repair mechanism which is the auto-error prone repair. I'll have to look them up again or it will drive me batty.

I might forget 95% of what I learn, but at least I can relearn it in 5% of the original time it took to learn it
__________________
Agents of the enemies who hold office in our own government, who attempt to eliminate our "freedoms" and our "right to know" are posting among us, I fear.....on this very forum. - host

Obama - Know a Man by the friends he keeps.
Ustwo is offline  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360