201. Introduction to Study of Variegation in Maize

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202. Inter-American Maize Improvement Program of the Rockefeller Foundation

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203. Induction of Instability at Selected Loci in Maize

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204. How Chromosomes Have Been Used to Trace the Origin and Migration of Races of Maize in the Americas

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205. Genome Shock as a Means of Reprogramming Genomes

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206. Genetic and Cytological Studies of Maize

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207. Genetic and Cytological Studies of Maize

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208. Gene-Control Mechanisms in Higher Organisms. Part II

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209. Gene Control Mechanisms in Higher Organisms: Two Common Types and Several Special Types

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210. Further Studies of the Suppressor-Mutator System of Control of Gene Action in Maize

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211. Further Studies of Gene-Control Systems in Maize

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212. Experimental Studies in Quantitative Genetics

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213. Expanding Concepts in Genetics

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214. Draft of letter from Barbara McClintock to Angel Kato

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215. Dotted kernels from the cross of as as, Dt, Dt ears by either ama or am pollen

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216. Cytogenetic Studies of Maize and Neurospora

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217. Cytogenetic Studies of Maize and Neurospora

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218. Corn specimens (Milho Pontinha)

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219. Corn specimens (Milho Palha Poxa)

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220. Corn specimen 77/6b [2]

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221. Corn specimen 77/6b [1]

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222. Corn specimen 77/5a [2]

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223. Corn specimen 77/5a [1]

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224. Corn specimen 77/4b [2]

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225. Corn specimen 77/4b [1]

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226. Corn specimen 77/4a

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227. Corn kernel specimens: Active, Cycling, and Inactive

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228. Corn kernel specimen (plate 3)

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229. Corn kernel specimen (plate 2)

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230. Corn kernel specimen (plate 1)

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231. Controlling Elements and the Gene

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232. Controlled Mutation in Maize

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233. Continuation of Transposition of Ds; Locations of Ds in Short Arm of Chromosome 9. The Missing Regions; Why. The States of Ds

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234. Continuation of Transposition of Ac; and its Relation to Somatic Sectoring and to Controls of Mutation of Mutable Genes

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235. Continuation of Inheritance Behavior in Ac

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236. Continuation of Discussion of wx-m1; The Induction of Mutability at Selected Loci; The States of a1-m3

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237. Conclusions on c-m1; Outline of bz-m1; Begin c-m2

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238. Components of Action of the Regulators Spm and Ac

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239. Chromosome Organization and Genic Expression

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240. Chromosome Organization and Function in Higher Organisms

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241. Chromosome Constitutions of Mexican and Guatemalan Races of Maize

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242. Changes in State of Ac -- the Effects; Breakage-fusion-bridge Cycles in Endosperm; Transposition of Ds (Begin)

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243. Barbara McClintock's Curriculum Vitae

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244. Barbara McClintock's Curriculum Vitae

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245. Aspects of Gene Regulation in Maize

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246. Aspects of Gene Control in Higher Organisms

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247. Alteration of Gene Action by Genetic Mechanisms

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248. A: The Chromatid Type of Breakage-Fusion-Bridge Cycle and B: The Chromosome Type of Breakage-Fusion-Bridge Cycle: Same as A from Meiosis to Formation of Egg and Sperm Nuclei

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249. A Short Biographical Note: Barbara McClintock

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250. A Method for Making Aceto-Carmin Smears Permanent

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