Philosophy of Biology

252 Raphael Falk one. Furthermore, contrary to reductive explanations in, say, physiology, which were chemical and physical in n ...

Genetic Analysis 253 organs). Hugo de Vries’s theory ofIntacellulare Pangenesis[de Vries, 1889], de- veloped in the last decades ...

254 Raphael Falk at once shifted his research program to the studygenetics— a term he introduced in 1905 — and aggressively prom ...

Genetic Analysis 255 hypotheses: To the extent that the morphologist’s or physiologist’s unit character did not agree with those ...

256 Raphael Falk cles were somehow representatives of the characteristics into which they develop (Entwickeln –unfold in German) ...

Genetic Analysis 257 However, most traits of plants and animals display patterns of continuous varia- tion. Did Mendel and the g ...

258 Raphael Falk or biased emphasis on the genetic component of characteristics became often a biological conception rather than ...

Genetic Analysis 259 and further interpreted August Weismann’s hypotheses of the central role of the cellular nucleus, and espec ...

260 Raphael Falk Confirmation of the independent segregation of chromosome pairs was obtained in meioses ofB. magnamales that po ...

Genetic Analysis 261 tional flies were due to “chromosomal non-disjunction”, that is to an occasional meiosis in an oocyte in wh ...

262 Raphael Falk reciprocal translocations. Alsovice versa, cytologically detectable major chro- mosomal aberrations — primarily ...

Genetic Analysis 263 deficiencies of up to several dozen “bands” of the polytenic chromosomes, allowed the assignment of one “ba ...

264 Raphael Falk bands of the stained vertebrate chromosomes (Q bands produced by quinacrine hydrochloride, G bands produced by ...

Genetic Analysis 265 Carl Correns was probably the first to take notice of the phenomenon of the deviation from the rule of inde ...

266 Raphael Falk it was necessary to spell out why linkage was not absolute, or, why all factors linked to a given chromosome sh ...

Genetic Analysis 267 Whether or not we regard the factors as lying in an actual material thread, it must on the basis of these f ...

268 Raphael Falk the model, the frequency of such marker-homozygotyzation was proportional to their distance from the centromere ...

Genetic Analysis 269 and by Lederberg [Lederberg, 1947; Lederberg and Tatum, 1946] for a process of sexual (or parasexual) matin ...

270 Raphael Falk staggered. Whitehouse suggested that the rejoining of the DNA molecules took place not by an end-to-end associa ...

Genetic Analysis 271 or many, of the Mendelian differences with which we deal in genetics as representing changes, chemical in n ...