Ch 10 Definitions: Sexual Behavior Flashcards
X chromosome
one of the two types of chromosomes;
XX will usually develop into females
Y chromosome
one of two types of sex chromosomes;
XY will usually develop into males
karyotype
a profile of chromosome number and appearance
in the nucleus of a cell
as seen under a light microscope
Turner Syndrome
a condition caused by XO genotype,
characterized by frequent abnormalities of the ovaries and infertility
Klinefelter syndrome
a condition in males caused by XXY genotype,
characterized by frequent problems with fertility, secondary sex characteristics, and verbal skills
gonads
the internal organs, ovaries in females and testes in males,
that produce reproductive cells (eggs and sperm) and secrete sex hormones
external genitalia
the external sexual organs,
including the penis and scrotum in males
and the labia, clitoris, and lower third of vagina in females
intersex
a condition in which elements of both male and female development occur in the same fetus
ovaries
female gonads;
the source of ova and sex hormones
testes
male gonads;
source of sperm and sex hormones
sex-determining region of the Y chromosome (SRY)
a gene located on the short arm of the Y chromosome that encodes for testis-determining factor
testis-determining factor
a protein encoded by the SRY gene on the Y chromosome that turns the primordial gonads into testes
Müllerian system
the internal system that develops into a uterus, fallopian tubes, and upper 2/3 of the vagina in the absence of the anti-Müllerian hormone
Wolffian system
the internal system that develops into seminal vesicles, vas deferens, and prostate gland in males
testosterone
an androgen produced primarily in the testes
anti-Müllerian hormone
a hormone secreted by fetal testes that causes the degeneration of the Müllerian system
androgen
a steroid hormone that develops and maintains typically masculine characteristics
androgen insensitivity syndrome (AIS)
a condition in which a genetic male fetus lacks functional androgen receptors, which leads to the development of female external genitalia and typically female gender identity and sexual behavior