DNA
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Deoxyribonucleic Acid
Carries genetic information
Composed of sugars, phosphates, and
nitrogen bases
Shape of a double helix, or a twisted ladder
GENES
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Control heredity
Transfer characteristics from parents to
offspring, and
Determines offspring genetic traits
that will be expressed
Segments of DNA
CHROMOSOMES
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TRAITS
Characteristic or feature of an organism.
Genes linked together
Come in pairs.
23 pairs of chromosomes in human cells.
The picture below on the right shows a
chromosome pair. The picture below on the
right shows one chromosome. On this
chromosome, there are 50 genes. Each gene
is made of DNA.
Inherited
Genetic material
passed during
reproduction
Hair Color
Facial Features
Height
Learned Trait
learned during the
life cycle of the
organism
Walk
Talk
Dance
Play Instrument
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Know the difference between learned and inherited traits.
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Know the definitions of and relationships between DNA, genes, chromosomes, and traits