When do you become genetically male or female?
singleAnswer
fertilization
XY sex-determination system
when genetically male or female
XY sex-determination system XX male syndrome Androgen insensitivity syndrome Intersex Male Virilization Chimera (genetics) Female Causes of transsexuality Disorders of sex development
The XY sex-determination system is the sex-determination system found in 
humans, most other ... <b>Females</b> typically have two of the same kind of sex 
chromosome (XX), and are called the homogametic sex. <b>Males</b> typically have two 
different kinds of sex chromosomes (XY), and are called the heterogametic sex. ... 
2.1 <b>Genetic</b>. XX <b>male</b> syndrome, also known as De la Chapelle syndrome, is a rare congenital 
intersex condition where an individual with a 46 XX karyotype (otherwise 
associated with <b>females</b>) has phenotypically <b>male</b> characteristics that can vary 
among cases. ... the Y chromosome, making them phenotypically <b>male</b> but 
<b>genetically female</b>. Androgen insensitivity syndrome (AIS) is an intersex condition that results in the 
partial or ... A <b>genetic male</b> conceived by a man with AIS would not receive his 
father&#39;s X chromosome, thus would neither inherit nor carry the gene for the ... 
<b>Genetic females</b> (46,XX karyotype) have two X chromosomes, thus have two AR 
genes. Intersex people are individuals born with any of several variations in sex 
characteristics including chromosomes, gonads, sex hormones or genitals that, 
according to the UN Office of the High Commissioner for Human Rights, &quot;do not fit 
the typical definitions for <b>male or female</b> bodies&quot;. ... Through the seventh week, 
<b>genetically female</b> and <b>genetically male</b> fetuses&nbsp;... Most mammals, including humans, are <b>genetically</b> ... produce a <b>male</b>, while an X 
sperm and an X egg produce a <b>female</b>. Virilization or masculinization is the biological development of sex differences, 
changes that ... Prenatal virilization of <b>genetic females</b> and undervirilization of 
<b>genetic males</b> are common causes of ambiguous genitalia and intersex 
conditions. A <b>genetic</b> chimerism or chimera is a single organism composed of cells with more 
than one ... Most chimeras composed of both <b>male</b> and <b>female</b> cells probably do 
not have an intersex condition, as might be expected if the two cell populations&nbsp;... The sex of most mammals, including humans, is <b>genetically</b> determined by the 
XY sex-determination system where <b>males</b>&nbsp;... The study of the causes of transsexuality investigates gender identity formation of 
transgender ... Twin studies suggest that there are likely <b>genetic</b> causes of 
transsexuality, although the precise genes involved are not fully understood. ... 
<b>Male</b>-to-<b>female</b> transsexuals were more likely than cisgender <b>males</b> to have a 
longer&nbsp;... Disorders of sex development (DSDs) are medical conditions involving the 
reproductive system ... The penis (<b>males</b>) and clitoris (<b>females</b>) have a mutual 
origin, both arising ... It only affects people with Y chromosomes, namely <b>genetic</b> 
<b>males</b>.
at the time of fertilization
Sexual differentiation in humans