Eukaryotic Chromosome
Vocab 		"I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived."

--Henry David Thoreau Walden

coiling of DNA DNA is packed in coils by nucleosomes
exon the protein-coding region of a eukaryotic gene; the RNA transcribed from that region.

gene a discrete unit of hereditary information (DNA) that usually specifies a polypeptide.

gene expression when a gene goes through translation, it is expressed.

heterozygous alleles possessing two different alleles of the same gene.

histone proteins small proteins bounded to DNA that serve in the coiling and uncoiling of DNA.
homologous chromosomes corresponding chromosomes. In humans there are 23 pairs of homologous chromosomes, each containing one chromosome from the mother and one from the father.

homozygous alleles a pair of identical alleles

introns as opposed to exons, the nonprotein-coding region of a eukaryotic gene; do not appear in translated mRNA.
nucleosome a structure associated with DNA consisting of histone proteins that functions in the coiling of DNA

transposon a segment of DNA that is capable of moving in and out of a chromosome, turning genes on or off.

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