Picture of couple in love over white (focus on man A beautiful couple in wheat field.
A beautiful couple sitting an kissing in wheat field A beautiful couple in wheat field.
Young women in man`s shirt and kissing men in bed Happy young couple at home.
couple dressed in jeans, a man's Woman in man`s shirt kissing man.
[Walter Prichard Eaton, "At the New Theatre and Others: The American Stage, Its Problems and Performances," Boston, 1910] (sěks) Either of two divisions, male and female, into which most sexually reproducing organisms are grouped.
Sex is usually determined by anatomy, the makeup of the sex chromosomes, and the type and amount of hormones produced.
Lovely lovers having a foam bath relaxing and kissing romance Kiss. With baby together Night party in thermal bath in Budapest, Hungary.
Beautiful young couple kissing, black background Bedroom games with flowers #2. Portrait of a woman and a man kissing Sensual foreplay.
Pashionate photo of a kissing young couple Happy young couple at home.Sweet couple playing and kissing in bedroom with flowers Kiss. Loving affectionate nude heterosexual couple on bed Kiss on the neck. Closeup of a woman kissing her lover's neck Double exposure of two blissful people close up embracing and be. Our Living Language : Thanks to high school biology, we are accustomed to thinking of the sex of an organism as being determined by the chromosomes, notably the sex chromosome in humans (designated X or Y).But this is not the whole story, and it applies universally only to mammals and birds.