{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


HumanInheritance160-page7 - • Trisomy XXY(male(and other...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Human Inheritance Patterns - 7 Non-disjunction of sex chromosomes There are a number of sex chromosome non-disjunctions. Monosomy X0 Turner syndrome Symptoms include absence of secondary sexual development and sterility because of insufficient hormone production. Turner syndrome is more often the result of non-disjunction in sperm formation (75%) than in egg formation. Monosomy Y0 Lethal in embryonic development Trisomy XXX (female) No detectable problems. Females are usually fertile and bear normal XX or XY children.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: • Trisomy XXY (male) (and other multiples with both X and Y, except XYY) • Kleinfelter syndrome • May have mixed secondary sexual development at puberty and low sperm production; the testes and prostate gland are smaller than normal. Males are generally taller and heavier than average. • Two-thirds of the extra Xs come from the egg. • Trisomy XYY (male) • Jacob Syndrome • Increased vertical stature • May have higher testosterone levels and greater incidence of acne...
View Full Document

{[ snackBarMessage ]}