1. Title: Biology 2/7/07 Objectives: Class Topics
7/2/2019
Title: Biology 2/7/07
Objectives:
To assess learning about some of the aberrations to Mendelian genetics and dihybrid crosses and continue to learn about pedigree analysis
Class Topics
Hand in Probability and dihybrid crosses W.S. before the bell rings please
Chapter 8 Quiz 2
Chapter 8 – Beyond Mendel
Pedigree analysis
Sex-linked inheritance
"Go confidently in the direction of your dreams. Live the life you have imagined."
Henry David Thoreau
Tuesday, July 02, :26 PM

2. Class Assignments Chapter 8 Quiz 2 2/7/07
7/2/2019
Class Assignments
What
By When
Chapter 8 Quiz 2 2/7/07
W.S. Probability and dihybrid crosses 2/7/07
Read /9/07
W.S. Interpreting Information in a Pedigree 2/9/07
Not 3A
Due this class period
Due next class period
Due in the future

3. 7/2/2019
Grade Sheet
2A – p. 157 (5 pts.)

4. 7/2/2019
Postquiz Activities
Read
Correct homework

5. Pedigree Analysis Seen in every generation Skips generations 7/2/2019
From:

6. 7/2/2019

7. From: http://www.people.virginia.edu/~rjh9u/brachyped.html
7/2/2019
From:

8. Sex-linked inheritance
7/2/2019
Some genes are carried on the X chromosome - Sex-linked genes
Fruit flies example
White eyed male with red eyed female = all red eyed offspring
Crossed two of the F1 offspring and ended up with 3:1 ratio - red to white (all white eyed flies were male!!!)
Sex-linked inheritance

9. Sex-linked inheritance
7/2/2019
Sex-linked inheritance
Found mostly in males
Males are hemizygous
Cannot hide recessive allele
Cannot be carriers of trait
Females can show trait
Must be homozygous recessive
Can carry trait (heterozygous)
Has nothing to do with hormones
Sex-influenced traits