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1. Each gene is a piece of genetic information.

2. A gene is made of DNA.

3.  All the DNA in the cell makes up for the human genome.

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1. A gene is a part of DNA (deoxyribonucleic acid) that contains the instructions that control a trait. You have different genes for each of the different traits that you inherit.

2. The genes are grouped into collections called chromosomes.

3. What are chromosomes and chromatids?

4. What are homologous chromosomes and sister chromatids?

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1. Genetics is the study of heredity.
2. Genetic materials: DNA and RNA.

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1. Every cell in the body with a nucleus has the same complete set of genes.

2. A gene is made of DNA and is basically a type of genetic instruction.

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1. Every person has two copies of each gene, one inherited from each parent.

2. Genes are instructions for building the parts of your body and doing the work that keeps you alive, from carrying oxygen to digesting to food and everything else we do.

3. Central Dogma of Molecular Biology (Information flow in cells):
DNA--> RNA-->Protein

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1. What are the components?

2. What bonds hold these components together?

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1. Hydrogen bonding??

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- mRNA
- rRNA
- tRNA

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- pentose sugar?
- phosphate group?
- bases

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1. Base pairing rule?? Explain hydrogen bonding.

2. Nitrogenous bases (A, T, G, and C)

3. Double helix

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- single-stranded

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1. What are chromatins