1. Bellwork: 2/25 Put your phone up  Week 2/25 - 3/1
How was your rodeo break?
What did Gregor Mendel discover about genes and traits?
Have you ever done Punnett squares?

2. Today:
Part 2 Notes

3. Materials
Unit Book

4. This Week: Monday: Part 2 Notes Tuesday: Part 3 Notes & Practice
Wednesday: Practice & Class Activity
Friday: Monster Genetics

5. Homework
None 

6. Unit V: Mendelian Genetics

7. Part II: Gregor Mendel

8. Vocab
Trait: specific characteristic (hair color, eye color, height, etc…)
Hybrid: offspring of crosses between parents with different traits
Purebred: offspring of crosses between parents with same traits or from asexual reproduction
Heredity: Passing of genes from one generation to another

9. Vocab Genetics: Scientific Study of Heredity
Gene: Chemical factors that determine traits (found on chromosomes)
Allele: Different forms of a gene

10. Gene vs. Allele
Gene: Hair color
Allele: Brown, Blonde, Red

11. Gregor Mendel 19th Century Austrian Monk
Worked in Monastery gardens in the Czech Republic
Using garden peas, he changed biology forever

12. Mendel’s Peas
Mendel joined male & female reproductive cells from two different pea plants
This is known as cross-pollination
Mendel cross-bred plants with different characteristics to study the results

13. Genes Mendel studied 7 different pea plant traits
Ex: seed color, plant height
Discovered that biological inheritance is determined by factors that are passed from one generations to another
These “factors” that are passed on are called genes (example: seed color) 
Also discovered that these genes occur in different forms
These ”different forms” are called alleles (example: green)

14. Mendel’s Laws of Heredity
Rule of Dominance:
Some alleles are DOMINANT and others are RECESSIVE
An organism with a DOMINANT allele for a particular trait will always exhibit that trait
An organism with a RECESSIVE allele for a particular trait will only exhibit that trait if the dominant allele is not present

15. Mendel’s Laws of Heredity
Rule of Dominance:
Dominant Allele: Tall Plant, Yellow Seed
Recessive Allele: Short Plant, Green Seed

16. Mendel’s Laws of Heredity
2. Law of Segregation
In most sexually reproducing organisms, each adult has TWO copies of each gene - one from each parent
These genes are segregated from each other when gametes (sex cells) are formed

17. Mendel’s Laws of Heredity
3. Law of Independent Assortment
The alleles for different genes usually segregate INDEPENDENTLY of one another

18. Answer Questions in Note Guide