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Ch 7 science Holt California part 2
N/A
9
Biology
7th Grade
12/11/2009

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Cards

Term
Who made a model of DNA?
Definition
James Watson and Francis Crick
Term
Who used X-ray diffraction to make images of DNA that helped revel the structure of DNA?
Definition
Rosalind Franklin
Term
What is the shape of a DNA molecule?
Definition
double helix
Term
What are Chargaff's rules?
Definition
the amount of guanine always equals the amount of cytosine. The amount of adenine always equals the amount of thymine.
Term
What does a chromosome look like?
Definition
a X
Term
What is a chromosome made up of?
Definition
chromatin
Term
what is chromatin made up of?
Definition
DNA and proteins
Term
how many chromosomes are in a human body cell?
Definition
46
Term
What is protein made up of?
Definition
long strands of amino acids. usually, one protein is produced for each gene
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