DNA
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14 Terms
Organisms
All living entities made of cells.
Adult human cells
An adult human contains 50 to 100 trillion cells.
Nucleus
The control center of the cell that contains instructions for cell function.
Chromosomes
Structures within the nucleus made of DNA that carry genetic information.
Human chromosomes
Humans have 46 chromosomes in each cell.
Inheritance of chromosomes
23 chromosomes are inherited from the father and 23 from the mother.
DNA
Deoxyribonucleic acid, the molecule that makes up chromosomes.
Gene
A section of DNA that contains instructions for a specific feature.
Features
Characteristics controlled by genes.
Double helix
The twisted ladder shape of DNA.
Nucleotide
The repeating unit of DNA, made up of sugar, phosphate, and a base.
DNA sides
The sides of DNA are composed of sugar and phosphate.
Nucleotide bases
The chemicals that link the sides of DNA, consisting of adenine, thymine, cytosine, and guanine.
Complementary base-pairing rule
The rule that adenine pairs with thymine and cytosine pairs with guanine in DNA.
Flashcards (20)