Inheritance of Traits
by Rebecca Long
1. Genes
1.1. Regions Of DNA Along Chromosomes That Code For Different Traits
1.2. Carries Traits
1.3. Passed Down Through Heredity
1.4. Made Of DNA
2. Chromosomes
2.1. Threadlike Structures In A Cell's Nucleus That Organizes DNA Around Proteins
2.2. 23 Pairs From Each Parent In Each Cell
2.3. 46 Chromosomes In Each Cell
2.4. Storage Unit For Genes And DNA
3. Sperm
3.1. Male Sex Cells
3.2. Carries 1/2 Of The Traits From Father To Offspring
4. Dominant Gene
4.1. The Gene That Overpowers Another
4.2. Only Needs 1
5. Alleles
5.1. Different Forms Of The Same Gene
6. Dominant Alleles
6.1. At Least One Copy Of The Allele Has To Be Present
6.2. Letters Are Used To Represent Genes/Alleles
7. DNA
7.1. Stands for Deoxyribonucleic Acid
7.2. A chemical that contains the genetic code or instructions for traits
7.3. No one has the same DNA as another
7.4. DNA is found in your chromosomes
7.5. DNA is passed down from your parents/ancestors
8. Heredity
8.1. The passing of physical traits from parents to offspring
9. Egg
9.1. Female Sex Cells
9.2. Carries 1/2 Of The Traits From Mother To Offspring
10. Recessive Gene
10.1. The Gene That Needs Two To Overpower Dominant
10.2. Usually Skips Generations
11. Inheritance
11.1. You Inherit At Least Two Alleles For Each Trait
11.2. One From Mom, One From Dad
12. Recessive Alleles
12.1. Only If You Inherit Two Recessive Alleles