Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search help
2,277 results
  1. NLM Digital Collections - The Behavior in Successive Nuclear Divisions of a Chromosome Broken at Meiosis 
    Publication: National Academy Press (U.S.), 1939
    resource.nlm.nih.gov/101584613X23
    The Behavior in Successive Nuclear Divisions of a Chromosome Broken at Meiosis ... The Behavior in Successive Nuclear Divisions of a Chromosome Broken at Meiosis Meiosis Chromosomes Chromosome Breakage Crossing Over, Genetic After reporting her observations of ring chromosomes, ...
  2. Glossary | Barbara McClintock - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/ll/feature/glossary
    ... identified readily in the nucleus. Meiosis -- Two successive nuclear divisions--with corresponding cell divisions--that produce haploid sexual ... genetic material of the original cell. Mitosis -- The nuclear division that produces two daughter nuclei identical to the ...
  3. SGO1 gene: MedlinePlus Genetics 
    https://medlineplus.gov/genetics/gene/sgo1
    ... function as a guardian for chromosomal stability in nuclear division. Cell Cycle. 2012 Jul 15;11(14):2631- ...
  4. NLM Digital Collections - General pathology or the science of the causes, nature and course of the pathological ... 
    Publication: New-York : William Wood and Company, 1896
    resource.nlm.nih.gov/101201565
    ... two masses of equal size. The process of nuclear division is often called karyoki= nesis (aapvov, kernel of ... the nucleus are un- equal, so that asymmetrical nuclear-division figures result. This is observed especially often in ...
  5. NLM Digital Collections - The biological problem of to-day : preformation or epigenesis? : The basis of a theory of ... 
    Publication: New York : The Macmillan Co., [1900]
    resource.nlm.nih.gov/101710065
    ... identical portions of germplasm by means of doubling nuclear divisions. The different positions, relations to each other and ... capacities of the species. Weismann says that the nuclear divisions are differentiating, and that the microcosms of the ...
  6. NLM Digital Collections - Pharmaceutical botany : a text-book for students of pharmacy and general science 
    Publication: Philadelphia : P. Blakiston's Son & Co., [1923]
    resource.nlm.nih.gov/10731040R
    ... Sexual Reproduction: Conjugation and Fertilization 76-78 INDIRECT NUCLEAR DIVISION 78-80 NON-PROTOPLASMIC CELL CONTENTS.—Sugars. Starch ( ... shed. A series 56 PHARMACEUTICAL BOTANY of three nuclear divisions takes place which cut off two small prothal- ...
  7. NLM Digital Collections - Index-catalogue of the Library of the Surgeon-General's Office, United States Army. Authors ... 
    Publication: Washington : G.P.O., 1880-1932
    resource.nlm.nih.gov/8104689X40
    ... 286.— Gaylord (H. R.) On the evidence of nuclear division of certain cell inclusions (Thoma, Sjobring, PUmmer's bodies) ... Leijden (Mme. C. E.) Some observations on periodic nuclear division in the cat. K. Akad. v. Wetensch. te ...
  8. NLM Digital Collections - The Association of Mutants with Homozygous Deficiencies in Zea Mays 
    Publication: Genetics Society of America, September 1940
    resource.nlm.nih.gov/101584613X14
    ... five or six hundred divisions. In all other nuclear divisions the ring chromosome behavior is normal; the two ... Prophase, fig. 1) approximately once in every hundred nuclear divisions. All of the other nuclear divisions are completely ...
  9. NLM Digital Collections - An examination of Weismannism 
    Publication: Chicago : The Open Court Publishing Company, 1899
    resource.nlm.nih.gov/60840680R
    ... as the germ- nucleus has undergone its first nuclear division, its nucleo-plasm is no longer germ-plasm, ... case of identical twins. Similarly in the second nuclear division, each of the four resulting idio-plasms-B ...
  10. NLM Digital Collections - The Stability of Broken Ends of Chromosomes in Zea Mays 
    Publication: Genetics Society of America, March 1941
    resource.nlm.nih.gov/101584613X15
    ... fusion-bridge cycle continue in each suc- cessive nuclear division, or will the broken end, produced by the ... fusion- bridge cycle will continue in the successive nuclear divisions during the development of the endosperm tissues. (2) ...
first · previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · next · last