Search results
Results From The WOW.Com Content Network
[5] [6] The term "sex determination" increased in usage after 1900. [7] In the 1960 and early 70's the term "sex assignment" came into prominent use as a colloquially word for "determination of sex" and "sex determination". "Sex assignment" did not occur in writing prior to the 1960's. It is used ~100 times less frequently than "determination ...
In most species with XY sex determination, an organism must have at least one X chromosome in order to survive. [ 2 ] [ 3 ] The XY system contrasts in several ways with the ZW sex-determination system found in birds , some insects, many reptiles , and various other animals, in which the heterogametic sex is female.
Future IOC president Avery Brundage requested, during or shortly after the 1936 Summer Olympics in Berlin, that a system be established to examine female athletes.According to a Time magazine article about intersex people, Brundage felt the need to clarify "sex ambiguities" after observing the performance of Czechoslovak runner and jumper Zdeňka Koubková and English shotputter and javelin ...
In 1999, when women scientists forced real change at MIT, journalist Kate Zernike broke the story. Here's why she revisits it in her book, 'The Exceptions.' How MIT scientists fought for gender ...
The relationship between the environment and sexual orientation is a subject of research. In the study of sexual orientation, some researchers distinguish environmental influences from hormonal influences, [1] while other researchers include biological influences such as prenatal hormones as part of environmental influences.
Chromosomal sex is determined at the time of fertilization; a chromosome from the sperm cell, either X or Y, fuses with the X chromosome in the egg cell. Gonadal sex refers to the gonads, that is the testicles or ovaries, depending on which genes are expressed. Phenotypic sex refers to the structures of the external and internal genitalia. [6]
“The sex characteristics a person is born with do not signify a person's gender identity. When people have ‘gender reveal parties,’ it really should be called a ‘genital reveal party ...
In 2022, the Journal of Sex Research published a study of 26,542 men and 33,534 women that had entered same-sex unions in the Netherlands as compared with 4,607,785 men and 4,405,635 women that found robust evidence of a fraternal birth order effect on both male and female homosexuality and no support for a female fecundity effect, but the ...