1. Add to table of contents:
PEDIGREE EXAMPLES pg 54
PEDIGREES pg 55

2. Pedigrees Pg. 55
Pedigree -Graphical representation of genetic inheritance.
Carrier – carries the gene, but is not affected by the disorder.

3. Copy the pedigree into notebook:
= carrier female

4. Colorblind tests

5. Sex chromosomes:
XX = girl
XY = boy

6. Sex-linked – controlled by genes on the sex chromosomes.
normal=C, Colorblind=c
XcXC =
XcXc =
XcY =
XCY=
Carrier female Colorblind female Colorblind male Normal male

7. What is albinism?

8. = carrier female

9. Page 54
1. Given the following genotypes, describe the phenotypes (normal=dominant, albino=recessive)
AA = ________________________________
Aa = ________________________________
aa = ________________________________
2. Copy this pedigree onto your page.
Fill out the blanks with genotypes on the pedigree above.

10. 3. How many children does this family have? _____
4. What are the sexes of the children? ________
5. How many generations are there?________
6. What is the phenotype for the dark circle?______
7. How many people have at least 1 a gene?_____