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CHROMOSOMES
Chromosomes are found inside the 1. nucleus of a cell. There are 2. twenty-three pairs of chromosomes in every human body cell. One of each pair of chromosomes comes from each 3. parent. Chromosomes are made up of long lengths of 4. deoxyribonucleic acid.
GENES
A gene is a short section of a 1. chromosomes. Each gene 2. codons for a different 3. characteristics. Genes work in 4. pairs. There are different versions of each gene, one is often 5. dominant over the others.
DNA
DNA is short for 1. deoxyribonucleic acid. It is a long chain 2. molecule that is made of a combination of 3. four DNA bases. DNA has a special structure called a 4. double helix.