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References Ainsworth C., Crossley S., Buchanan-Wollaston V., Thangavelu M., Parker J. (1995): Male and female flowers of the dioecious plant sorrel show different patterns of MADS box gene expression.- Plant Cell 7: 1583- 1598. Ainsworth Ch. (2000): Boys and girls come out to play: The molecular biology of dioecious plants.- Annals of Botany 86: 211- 221. Allen C.A. (1917): A chromosome difference correlated with sex differences in Sphaerocarpus.- Science 46: 466- 467. Audran J.C., Batcho M. (1981): Microsporogenesis and pollen grains in Silene dioica (L.) Cl

References Addison, B. A., Kitaysky, A. S. & Hipfner, J. M. 2008. Sex allocation in a monomorphic seabird with a single-egg clutch: test of the environment, mate quality, and female condition hypotheses. - Behavioral Ecology and Sociobiology 63: 135-141. Bradbury, R. B. & Blakey, J. K. 1998. Diet, maternal condition, and offspring sex ratio in the Zebra finch, Poephila guttata . - Proceedings of the Royal Society of London B 265: 895-899. Burley, N. 1981. Sex ratio manipulation and selection for attractiveness. - Science 211: 721-722. Burley, N. 1986. Sex

References Afonso L. O. B., Iwama G. K., Smith J., Donaldson E. M. 2000 - Effects of aromatase inhibitor fadrozole and reproductive steriods and spermiation in male coho salmon ( Oncorhynchus kisutch ) during sexual maturation - Aquaculture 188: 175-187. Bieniarz K., Goryczko K., Dobosz S., Grudniewski T. 1991 - The effects of 17α-methylotestosterone on rainbow trout ( Oncorhynchus mykiss ) - Pol. Arch. Hydrobiol. 38: 295-301. Billard R. 1992 - Reproduction in rainbow trout: sex differentiation, dynamics of gametogenesis, biology and preservation of gametes

womem. J Reprod Infant Psychol. 1999;17(4):369-80. 5. Shettles L, Rorvik DM. Zaplanuj płeć swojego dziecka. Warszawa: Wyd. Filar; 2001. 6. Kooper AJ, Pieters JJ, Eggink AJ, et al. Why do parents prefer to know the fetal sex as part of invasive prenatal testing? ISRN Obstet Gynecol. 2012;2012:524-37. 7. Chen LC, Chen CY, Horng HC, et al. Sex ratio at a tertiary medical center in northern Taiwan--an analysis of amniocentesis; Taiwan J Obstet Gynecol. 2014;53(1):118-9. 8. Lau TK, Chan MK, Salome Lo PS, et al. Non-invasive prenatal screening of fetal sex chromosomal

References 1. Wellings K, Parker R, Britton A. A reference guide to policies and practicies: Sex education in Europe. IPPF European Network; 2006. [http://www.laicite-laligue.org/images/PDF/IPPF_sexuality_education.pdf] 2. Federacja na Rzecz Kobiet i Planowania Rodziny. Edukacja seksualna czy Wychowanie do życia w rodzinie? Przepisy prawne i podstawa programowa. [http://www.federa.org.pl/publikacje/edukacja_seksualna_factsheet_2013.pdf] 3. Frankowicz-Gasiul B, Michalik A, Czerwińska A, et al. Ciąża młodocianych - problem medyczny i społeczny. Studia ed. 2008

54 In an effort to cut through the tremendous clutter that ex- ists in today’s advertising space, marketers have resorted to increasingly radical tactics to capture consumer atten- tion. One such popular tactic uses explicit sexual images in advertising, even when the sexual image has little relevance to the advertised product. For example, a recent print ad campaign for Toyo Tires showed a nude female model crouched on all fours with the tag-line “Tires that Fit You”. Although such gratuitous use of sex in advertising un- doubtedly succeeds in capturing

, Eklund RC. Social physique anxiety, reasons for exercise, and attitudes toward exercise settings. J Sport Exercise Psy, 1994İ 16: 70-82 Crocker PRE, Synder J, Kowalski KC, Hoar S. Don't let me be fat or physically incompetent! The relationship between physical self-concept and social physique anxiety in Canadian high performance female adolescent athletes. AVANTE, 2000; 6: 16-23 Cusumano DL, Thompson JK. Body image and body shape ideals in magazines: Exposure, awareness, and internalization. Sex Roles, 1997; 37: 701-721 Davis C. Body image, dieting behaviors and

Abbreviations BMD - bone mineral density E 2 - estradiol DXA - Dual-energy X-ray absorptiometry BMI - body mass index WHO - World Health Organization Tt - total testosterone Tf - free testosterone ECLIA - Electrochemiluminescence immunoassay ELISA - Enzyme-linked Immunosorbent Assay IBM-SPSS - International Business Machines-Statistical Package for Social Sciences SHBG – sex hormone binding globulin References 1. Rao SS, Budhwar N. Ashfaque A. Osteoporosis in men. Am Fam Physician. 2010 Sep 1;82(5):503-508. 2. Herrera A, Lobo-Escolar A, Mateo J, Gil J, Ibarz E

. (2011) Linking leadership empowerment behavior to employee attitudes and behavioral intentions. Personnel Review , 40, 284-305. Elsaid, A. M., & Elsaid, E. (2012) Sex stereotypes of managerial positions. Gender in Management , 27, 81-99. Eltahawy, M. (2015) Egypt’s human rights abuses. National Post , November 25, A13. El-Hamidi, F., & Said, M. (2014) Gender-based wage and occupational inequality in the new millenium, in Egypt. Journal of Developing Areas , 48, 21-41. Hassanien, D. (2010) Gendering decent work: Obstacles to performativity in the Egyptian

References Annon 2000. http://www.fao.org/fi/statist/fisoft/fisat CICB and OMPO. 2002. Key to ageing and sexing of the Common Snipe Gallinago gallinago by the study of feathers. CICB & OMPO, Paris. Devort M. 1997. The snipe. Elements of an action plan. CICB & OMPO. Devort M. 1989. Towards a method to age and sex Common Snipe (Gallinago gallinago) by external criterions. IWRB, WSRG Newsletter   15 : 23-26. Green R.E. 1991. Sex differences in the behaviour and measuring of Common Snipe Gallinago gallinago breeding in Cambridgeshire, England. Ring. & Migr