{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Bio II Slide Set VII - UNIT II SLIDE SET VII I Extensions...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
UNIT II: SLIDE SET VII I. Extensions of Mendel’s Rules (continued) E. Sex Linked Inheritance 1. Sex chromosomes 2. Systems of sex determination a. XY system b. X0 systems c. ZW systems d. Haplo-diploid systems e. Non-chromosomal sex determination 3. X-linked inheritance 4. Y-linked inheritance 5. Effects of sex on autosomal traits Monday, June 13, 2011
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
II. Pedigree analysis A. Symbols B. Analyzing modes of inheritance using pedigrees C. Examples III. Human genetic abnormalities A. Chromosome abnormalities 1. Aneuploidy and non-disjunction a. Down syndrome b. Turner syndrome c. Klinefelter syndrome 2. Chromosomal mutations B. Dominantly and recessively inherited disorders Monday, June 13, 2011
Background image of page 2
IV. Genetic Testing A. Molecular detection of specific alleles B. Pedigree analysis C. Fetal testing 1. amniocentesis 2. chorionic villus sampling (CVS) 3. ultrasound 4. Fetoscopy D. Newborn screening E. Gene therapy F. Ethics/privacy issues V. Nature vs. Nurture A. Phenotypic plasticity 1. the “norm of reaction” 2. examples Monday, June 13, 2011
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Exceptions to Mendel’s rules (cont’d): 4. Individuals have 2 versions (alleles) for each gene (i.e., alleles occur on homologous pairs of chr’somes) Exception: genes on the X or Y chromosomes (= “ sex-linked ” genes: genes “linked” to or found on one of the sex chromosomes) Monday, June 13, 2011
Background image of page 4
Y chromosome (replicated) Fig. 15.5 (7 th : p. 282) X chromosome (replicated) Monday, June 13, 2011
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Y chromosome (replicated) in humans and many other species, the composition of the sex chromosomes varies between males and females. Fig. 15.5 (7 th : p. 282) X chromosome (replicated) Monday, June 13, 2011
Background image of page 6
Y chromosome (replicated) in humans and many other species, the composition of the sex chromosomes varies between males and females. females XX , males XY Fig. 15.5 (7 th : p. 282) X chromosome (replicated) Monday, June 13, 2011
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Y chromosome (replicated) in humans and many other species, the composition of the sex chromosomes varies between males and females. females XX , males XY these X and Y chromosomes can have some same & some different genes Fig. 15.5 (7 th : p. 282) X chromosome (replicated) Monday, June 13, 2011
Background image of page 8
Y chromosome (replicated) in humans and many other species, the composition of the sex chromosomes varies between males and females. females XX , males XY these X and Y chromosomes can have some same & some different genes but the X and Y act like homologues during meiosis because of “pseudoautosomal” regions (regions in common) Fig. 15.5 (7 th : p. 282) X chromosome (replicated) Monday, June 13, 2011
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Human copyright © 1994 David Adler http://www.pathology.washington.edu/research/cytopages/idiograms/human/ http://www.pathology.washington.edu/galleries/Cytogallery/main.php?file=human%20karyotypes RECALL: human male and female karyotypes male female no “Y” Monday, June 13, 2011
Background image of page 10
humans: XX (female) x XY (male) male gametes: 1/2 X 1/2 Y female 1/1 X gametes (only X is possible) 1/2 XX 1/2 XY Monday, June 13, 2011
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
humans: XX (female) x XY (male) male gametes: 1/2 X 1/2 Y female 1/1 X gametes (only X is possible) 1/2 XX 1/2 XY Therefore: in humans, gender of offspring is “determined” by father’s gamete (sperm) Monday, June 13, 2011
Background image of page 12
Image of page 13
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}