376
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Jain KK, Gideon S, Singh L. Hereditary spherocytosis. Indian J Pediatr 1971; 38:455-7. [PMID: 5144579 DOI: 10.1007/bf02813177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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377
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Ray-Chaudhuri SP, Singh L, Sharma T. Evolution of sex-chromosomes and formation of W-chromatin in snakes. Chromosoma 1971; 33:239-51. [PMID: 4326042 DOI: 10.1007/bf00284942] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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378
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Meade RD, Singh L. Motivation and progress effects on sychological time in subcultures of India. THE JOURNAL OF SOCIAL PSYCHOLOGY 1970; 80:3-10. [PMID: 5418535 DOI: 10.1080/00224545.1970.9712512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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379
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Singh L, Sharma T, Ray-Chaudhuri SP. Multiple sex-chromosomes in the common Indian krait, Bungarus caeruleus Schneider. Chromosoma 1970; 31:386-91. [PMID: 5490305 DOI: 10.1007/bf00285830] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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380
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Ray-Chaudhuri SP, Singh L, Sharma T. Sexual dimorphism in somatic interphase nuclei of snakes. CYTOGENETICS 1970; 9:410-23. [PMID: 5518564 DOI: 10.1159/000130111] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Somatic interphase nuclei of different tissues of heterogametic females of various species of snakes with a differentiated W chromosome possess a distinct, darkly stained chromocenter comparable to the characteristic mammalian sex chromatin. The absence of such a prominent body in similar tissues of homogametic males, the allocycly in the DNA replication pattern exhibited by the W, and the positive correlation between the size of the chromocenter and the size of the W in different species are the evidence from which it is concluded that the sex-chromatin body of the interphase nuclei in snakes is formed by the W chromosome of the heterogametic females. The lack of incorporation of <sup>3</sup>H-uridine by the chromocenter indicates its inactivity. In order to distinguish this heteropycnotic body from the sex chromatin of the homogametic sex in mammals, it is suggested that it be termed “W chromatin”.
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381
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Singh L, Sharma T, Ray-Chaudhuri SP. W chromosome in the Indian water snake (checkered keel back) Natrix piscator (Colubridae). EXPERIENTIA 1968; 24:79-80. [PMID: 5637627 DOI: 10.1007/bf02136807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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382
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Singh L, Sharma T, Ray-Chaudhuri SP. Chromosomes and the classification of the snakes of the family Boidae. CYTOGENETICS 1968; 7:161-8. [PMID: 5693182 DOI: 10.1159/000129980] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The chromosomes of the Indian rock python, <i>Python molurus</i> (sub-family Pythoninae), and the sand boa, <i>Eryx johni johni</i> (Boinae), were investigated and compared with those of <i>Boa constrictor </i>(Boinae). A striking similarity of the chromosomes of <i>Boa</i> and <i>Python</i> was observed, but the karyotype of the <i>Eryx</i> was found to be different from that of the other two species. This investigation clearly supports the validity of the doubt expressed by some taxonomists regarding a close phylogenetic relationship between <i>Boa </i>and <i>Eryx</i>.
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