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,Genetics-Exam 1 (ch 1-4).pdf Genetics-Exam 1 (ch 1-4).pdf Genetics-Exam 1 (ch 1-4)
Terms (106)
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What is genetics?
study of genes and what they do; branch of biology that deals with heredity and variation
root of the natural diversity that we observe among members of the same species as well as
among different species
Genetic variation
Gene
"Unit of heredity", usually described according to the way it affects the traits or characteristics
of an organism
Genetics-Exam 1 (ch 1-4).pdf Genetics-Exam 1 (ch 1-4).pdf Genetics-Exam 1 (ch 1-4).pdf
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How many genes are there?
Around 30,000-35,000
How much of the genome is coded for?
less than 5 %
What is the largest cellular molecule in humans?
DNA
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Categories of larger cellular molecules:
Nucleic acids (DNA, RNA), Proteins, Carbohydrates and lipids
Proteome
All the proteins that a cell makes at a given time
Constitutive Gene
Unregulated; different cell types; transcribed continually; different types
Housekeeping Gene
Ongoing business; histones; continually made; can control (turn on/off) housekeeping
depending on growth cycle
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