DNA, deoxyribonucleic acid, makes genes

1. DNA codes for proteins

2. There are two types of genes: recessive genes and dominant genes

2.1. Recessive genes are only inherited when there are two recessive alleles

2.2. Dominant genes can be inherited even if there's only one type of dominant allele

2.3. Alleles are alternate versions of genes

3. Chromosomes are threadlike structures of DNA that has genes

3.1. Every chromosome is made of DNA wrapped around the protein histone

4. Many diseases one contracts are directly related to your genes

5. DNA makes up chromosomes

5.1. Within the meiosis process only 23 chromosomes from each parent is taken because if you took 46 from both there's be 2 babies

5.2. Before mitosis happens we have to make a copy of the alleles given by both parents

5.3. During mitosis the sister chromatids are separated

5.4. Meiosis is the process of even having sister chromatids

6. Genes determine genotype since genotype is every gene that a person has

6.1. Genotype+your environment determine phenotype

6.1.1. Phenotype is physical traits