Genetics

1. DNA (Deoxyribonucleic Acid)

1.1. RNA

1.2. Chromosome

1.2.1. Gamete

1.2.1.1. Synthesized halves of chromosomes for reproduction

1.2.1.1.1. Males: XY

1.2.1.1.2. Females: XX

1.2.1.1.3. At conceptions, there are 6 males to every 5 females

1.2.2. Carry code to make an organism; 23 Pairs in Humans

2. Genes

2.1. Allele

2.1.1. Polymorphic

2.1.1.1. An allele with multiple forms

2.1.2. Any possible form of a gene

2.2. Genome

2.2.1. All the genes that constitute a human a human

2.2.1.1. 20,000-23,000 different Genes

2.3. Dominant-Recessive Pattern

2.3.1. Dominant Genes expressed

2.3.2. Recessive Genes not expressed

3. Twins

3.1. Monozygotic (Identical)

3.1.1. Develop from the same zygote

3.2. Dizygotic (Fraternal)

3.2.1. Develop from two separate zygotes

4. Genotype (Genetic Traits)

4.1. Carrier

5. Phenotype (Observed Traits)

5.1. Expression of Genes

5.2. Additive Gene