251. Draft of letter from Barbara McClintock to Angel Kato

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

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253. Cytogenetic Studies of Maize and Neurospora

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254. Cytogenetic Studies of Maize and Neurospora

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255. Corn specimens (Milho Pontinha)

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256. Corn specimens (Milho Palha Poxa)

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257. Corn specimen 77/6b [2]

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258. Corn specimen 77/6b [1]

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259. Corn specimen 77/5a [2]

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260. Corn specimen 77/5a [1]

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261. Corn specimen 77/4b [2]

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262. Corn specimen 77/4b [1]

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263. Corn specimen 77/4a

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

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265. Corn kernel specimen (plate 3)

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266. Corn kernel specimen (plate 2)

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267. Corn kernel specimen (plate 1)

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268. Corn geneticists in the Plant Breeding Department, Cornell University

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269. Corn and Microscope

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270. Controlling Elements and the Gene

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271. Controlled Mutation in Maize

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

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274. Continuation of Inheritance Behavior in Ac

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

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276. Contact print of Barbara McClintock

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

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278. Components of Action of the Regulators Spm and Ac

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279. Cold Spring Harbor

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280. Chromosomes

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281. Chromosomes

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282. Chromosome Structure in the Salivary Glands of Sciara

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283. Chromosome Organization and Genic Expression

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284. Chromosome Organization and Function in Higher Organisms

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285. Chromosome Constitutions of Mexican and Guatemalan Races of Maize

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

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287. Barbara McClintock's Curriculum Vitae

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288. Barbara McClintock's Curriculum Vitae

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289. Barbara McClintock with staff at the Banbury Center, Cold Spring Harbor Laboratory

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290. Barbara McClintock with her niece, Mitz Bhavnani at the Wailing Wall, Jerusalem

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291. Barbara McClintock with an unidentified man at the Rosenstiel Awards

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292. Barbara McClintock with Marjorie and niece, Mitz Bhavnani(?)

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293. Barbara McClintock wearing Groucho Marx glasses

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294. Barbara McClintock receiving honorary doctorate from Yale University

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295. Barbara McClintock in lab with maize

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296. Barbara McClintock in lab

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297. Barbara McClintock at Rosenstiel Awards

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298. Barbara McClintock at Cold Spring Harbor

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299. Barbara McClintock at Cold Spring Harbor

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300. Barbara McClintock

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