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Midterm

BIO1140_Midterm_3.docx

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Department
Biology
Course
BIO1140
Professor
A L L
Semester
Winter

Description
The two strands of a DNA double helix are said to be antiparallel This means thata one strand has a negative charge and the other strand has a positive chargeb the 5 end of one strand is directly paired with the 3 end of the other strandc the 5 end of one strand is directly paired with the 5 end of the other strandd since the double helix twists it is not perfectly parallelIn a righthanded double helix if one looks down the central axis of the molecule a each strand follows a counterclockwise path moving toward the observerb each strand follows a counterclockwise path moving away from the observerc one strand follows a clockwise path moving away from the observer the other follows a clockwise path moving toward the observed each strand follows a clockwise path moving toward the observere each strand follows a clockwise path moving away from the observerHistones areandcharged proteinsa s
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