You mean to say can intense exercise change a female to a male.
Now I haven't read every medical journal, but I seriously doubt a 30 minute run has caused a change in gender in the past, nor will it ever.
XX Two X chromosomes.
XX
XX for female and XY for male. -anonymous18_K
A male grasshopper's genotype is XO. A female grasshopper's genotype is XX. X represents the presence of a sex chromosome, and O represents the lack of a sex chromosome.
Her father has to have hemophilia as well, and the mother is a carrier or also has hemophilia. So if we pretend that the hemophilia gene is "x", you need to have "xx" to have hemophilia. The father must have the genotype "Yx" and the mother has the have "Xx" or "xx".
XX
XX
For the case of the human, an individual with XX genotype is female. Other organisms have different ways of determining sex.
XX Two X chromosomes.
XX
That is not public information but her genotype is probably XX like most females.
XX for female and XY for male. -anonymous18_K
XX
The genotype for a male is XY. A female is XX. The 23rd homologous pair is the sex gene that determines this.
A male grasshopper's genotype is XO. A female grasshopper's genotype is XX. X represents the presence of a sex chromosome, and O represents the lack of a sex chromosome.
a capital letter example: Bb or AA or Xx
The white eyed female fruit fly has two recessive traits for eye color. The genotype would be xx for example.