Humans are born with 46 chromosomes in 23 pairs. Most women are 46XX and most men are 46XY. Research suggests, however, that in a few births per thousand some individuals will be born with a single sex chromosome 45X or 45Y sex monosomies and some with three or more sex chromosomes 47XXX, 47XYY or 47XXY, etc. In addition, some males are born 46XX due to the translocation of a tiny section of the sex determining region of the Y chromosome. Similarly some females are also born 46XY due to mutations in the Y chromosome. Clearly, there are not only females who are XX and males who are XY, but rather, there is a range of chromosome complements, hormone balances, and phenotypic variations that determine sex.
Difference Between Primary and Secondary Sexual Characteristics
Secondary sex characteristic - definition of secondary sex characteristic by The Free Dictionary
A characteristic, such as breast development, voice pitch, or facial hair, that distinguishes the sexes from each other but is not directly concerned with reproduction. The appearance of these characteristics is influenced by hormones. Content related to secondary sex characteristic Sex Pistols Read more in this article about some frequently asked questions and fun facts related to our definitions. Because we're most often talking about human beings when we use these terms, it's critical we get them straight. Words nearby secondary sex characteristic secondary road , secondary saturation , secondary school , secondary sensory nucleus , secondary seventh chord , secondary sex characteristic , secondary sexual characteristic , secondary spermatocyte , secondary storage , secondary stress , secondary structure.
secondary sex characteristic
While primary sex characteristics are those that are present at birth, secondary sex characteristics are those that appear during puberty. These secondary sex characteristics are caused by hormones released at the time of puberty, which usually is around two years earlier in girls than in boys. While both boys and girls grow taller in their teenage years, the male body becomes more muscular, and the shoulders grow broader than the hips, while the female's hips become wider than her shoulders, and breasts develop. Some of the first changes in a boy are the growth of his testicles and growth of pubic hair.
He sometimes says things that are out of character for him. My dear husband was diagnosed in Nov of last year with Bipolar. My question is, how do I know if the person I am dealing with is his or him illness? Can anyone help me to comfort him? Make sure to surround yourself with supportive people that will listen with open ears and have a shoulder you can cry on when you need to.