SEXUAL ATTRACTION<br />
SEXUAL ATTRACTION<br />1) PHEROMONES…..CHEMICAL MESSAGES<br />2) HISTOCOMPATIBILITY GENE DIFFERENCES<br />          BASED ...
HOMOSEXUALITY<br />
KINSEY HETEROSEXUAL/HOMOSEXUAL SCALE<br />
As Kinsey writes in Sexual Behavior in the Human Male (1948):“Males do not represent two discrete populations, heterosexua...
the authors add in Sexual Behavior of the Human Female (1953):“It is a characteristic of the human mind that tries to dich...
Kinsey also reported:“While emphasizing the continuity of the gradations between exclusively heterosexual and exclusively ...
The scale ranges from 0, for those who would identify themselves as exclusively heterosexual with no experience with or de...
Is gayness genetic or environmental <br />1) inborn error or mutation<br />2) androgyny<br />3) childhood socialization<br...
Structural Differences<br />Hypothalamus size variation ( the INAH-3 area)……larger in straight men?<br />Gay  men may late...
Genetic twin studies<br />Monozygotic twins have more similar DNA<br />Twin studies compare mono and di.<br />If we compar...
Influence of sexual differentiation<br />6-14 weeks of fetal development and due to the presence of the y chromosome…….sex...
Upcoming SlideShare
Loading in …5
×

Sex Attraction And Homosexuality

736 views

Published on

Published in: Health & Medicine
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
736
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
18
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Sex Attraction And Homosexuality

  1. 1. SEXUAL ATTRACTION<br />
  2. 2.
  3. 3.
  4. 4. SEXUAL ATTRACTION<br />1) PHEROMONES…..CHEMICAL MESSAGES<br />2) HISTOCOMPATIBILITY GENE DIFFERENCES<br /> BASED ON SIGNIFICANT DIFFERENCES IN MATE’S IMMUNOLOGICAL CHARACTERISTICS. THIS DECREASES INCEST AND RECESSIVE GENES.<br />3) SHAPE OF FEMALE ( HOURGLASS AND HIP/WAIST/BUST)<br />4) YOUTHFUL APPEARANCE: BLOND, FULL BREASTED, SMOOTH SKIN,<br />SUBCONCIOUS SELECTS FOR FERTILITY AND HEALTH<br />
  5. 5. HOMOSEXUALITY<br />
  6. 6.
  7. 7. KINSEY HETEROSEXUAL/HOMOSEXUAL SCALE<br />
  8. 8. As Kinsey writes in Sexual Behavior in the Human Male (1948):“Males do not represent two discrete populations, heterosexual and homosexual. The world is not to be divided into sheep and goats…The living world is a continuum in each and every one of its aspects.&quot;<br />
  9. 9. the authors add in Sexual Behavior of the Human Female (1953):“It is a characteristic of the human mind that tries to dichotomize in its classification of phenomena….Sexual behavior is either normal or abnormal, socially acceptable or unacceptable, heterosexual or homosexual; and many persons do not want to believe that there are gradations in these matters from one to the other extreme.”<br />
  10. 10. Kinsey also reported:“While emphasizing the continuity of the gradations between exclusively heterosexual and exclusively homosexual histories, it has seemed desirable to develop some sort of classification which could be based on the relative amounts of heterosexual and homosexual experience or response in each history... An individual may be assigned a position on this scale, for each period in his life.... A seven-point scale comes nearer to showing the many gradations that actually exist.”<br />
  11. 11. The scale ranges from 0, for those who would identify themselves as exclusively heterosexual with no experience with or desire for sexual activity with their same sex, to 6, for those who would identify themselves as exclusively homosexual with no experience with or desire for sexual activity with those of the opposite sex, and 1-5 for those who would identify themselves with varying levels of desire or sexual activity with either sex.<br />
  12. 12. Is gayness genetic or environmental <br />1) inborn error or mutation<br />2) androgyny<br />3) childhood socialization<br />4)Biological structures ---brain morphology<br />5) genetic <br />
  13. 13. Structural Differences<br />Hypothalamus size variation ( the INAH-3 area)……larger in straight men?<br />Gay men may lateralize less?<br />Gene differences. Studies of monozygotic vs. dizygotic twins<br />
  14. 14. Genetic twin studies<br />Monozygotic twins have more similar DNA<br />Twin studies compare mono and di.<br />If we compare, gay tendency tends to be higher if a mono twin is gay than with a dizygotic twin<br />Could be that the “X” chromosome and gene Xq28 is similar in many gay brothers<br />
  15. 15. Influence of sexual differentiation<br />6-14 weeks of fetal development and due to the presence of the y chromosome…….sex changes develop and may be compromised or altered by maternal hormonal influence<br />At puberty ( secondary characteristics) develop due to estrogen/testosterone levels<br />

×