Males are larger and heavier, and have a ruff of fur around the neck.
Ursula Mittwoch has written: 'Genetics of sex differentiation' -- subject(s): Cytogenetics, Genetic Sex differentiation, Sex Determination, Sex chromosome abnormalities, Sex chromosomes
sex
Dr. Tiger Howard Devore, PhD.Psychologist and Certified Sex TherapistMedia Expert on Sex and Relationships
naturally, the 2 tigers have sex until the girl tiger is pregnant, then she'll have tiger cubs.
yes tiger woods went to sex rehab
Sex differentiation in biological organisms occurs through a combination of genetic and hormonal factors. The presence of specific sex chromosomes, such as XX for females and XY for males in humans, determines the individual's sex. Hormones, such as testosterone and estrogen, play a crucial role in the development of secondary sexual characteristics, such as reproductive organs and physical traits. During embryonic development, the expression of certain genes and the influence of hormones guide the differentiation of gonads into testes or ovaries, leading to the development of male or female characteristics.
Have sex. If not killing something
A health personage who studies all aspect of sex, including differentiation and dimorphism, and, particularly, sexual behaviour.
Yes, he is in sex rehab at the minute.
Have sex. If not killing something
Have sex. If not killing something
James J. Bull has written: 'Evolution ofsex determining mechanisms' -- subject(s): Evolution, Evolution (Biology), Genetic Sex determination, Sex Determination, Sex chromosomes, Sex differentiation