Abstract
1 min readNAULLEAU, G. 1973. Reproduction twice in one year in a captive viper (Vipera aspis). Brit. J. Herpetol. 5:353-357. PITMAN, C. R. S. 1974. A guide to the snakes of Uganda. Revised edition. Wheldon & Wesley, Ltd., Glasgow. PRESTT, I. 1971. An ecological study of the viper Vipera berus in southern Britain. J. Zool. (Lond.) 164:373-418. RAY-CHAUDHURI, S. P., L. SINGH AND T. SHARMA. 1970. Sexual dimorphism in somatic interphase nuclei of snakes. Cytogenetics 9:410-423. SHAW, R. F. 1958. The theoretical genetics of the sex-ratio. Genetics 43:149-163. , AND J. D. MOHLER. 1953. The selective advantage of the sex ratio. Amer. Nat. 87:337-342. SHINE, R. 1975. Ecological studies on Australian elapid snakes. Unpubl. Ph.D. Thesis, University of New England, Armidale, N.S.W., Australia. SPEITH, P T. 1974. Theoretical considerations of unequal sex ratios. Amer. Nat. 108:837-849. STEWART, B. R. 1968. Some observations on the natural history of two Oregon garter snakes (genus Thamnophis). J. Herp. 2:71-86. TRIVERS, R. L., AND D. E. WILLARD. 1973. Natural selection of parental ability to vary the sex ratio of offspring. Science 179:90-92. VERNER, J. 1965. Selection for the sex ratio. Amer. Nat. 99:419-421. WILLIAMS, G. C. 1966. Adaptation and natural selection. Princeton University Press, Cambridge, Mass.
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