Genes located on the sex chromosomes with expression and inheritance patterns differing between males and females
Sex chromosomes
Determine whether an individual is male or female
linked human genetic disorders are more common in males than in females due to the X-linked inheritance pattern
Human male karyotype: A human male possesses XY chromosomes, with the Y chromosome being much shorter than the X chromosome
Non-sex chromosomes are also called autosomes
linked inheritance
Genes on the X chromosome with distinctive inheritance patterns due to different numbers in females (XX) and males (XY)
Genotypes and phenotypes for hemophilia
XHXH = Normal Female
XHXh = Normal Female (carrier)
XhXh = Hemophiliac female
XHY = Normal Male
XhY = Hemophiliac male
Sex chromosomes
X, Y
Red-green color blindness means a person cannot see shades of red and green, with males being affected more often than females due to the gene being located on the X chromosome
Genotypes and phenotypes for red-green color blindness
XCXC = Normal Female
XCXc = Normal Female (carrier)
XcXc = Red-green color-blind female
XCY = Normal Male
XcY = Red-green color-blind male
Hemophilia is an inherited bleeding disorder where blood does not clot properly
Red-green color blindness
More common in males due to the gene being located on the X chromosome
Hemophilia
Usually inherited, causing blood not to clot properly
