What is the complementary DNA strand to 5?-ATTCGGTGA-3??
A. 5?-TAAGCCACT-3?.
B. 3?-CGGATTGTC-5?.
C. 5?-CGGATTGTC-3?.
D. 3?-TAAGCCACT-5?.
E. 3?-ATTCGGTGA-5?.
D. 3?-TAAGCCACT-5?.
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Transformation involves contact between two bacterial cells, followed by the unidirectional transfer of
plasmid genes.
Indicate whether the statement is true or false.A turtle is classified as a(n) ________
Fill in the blank(s) with correct word
The eradication of smallpox was possible because
A) it was a relatively mild disease. B) insect vectors were eliminated. C) there are no animal reservoirs of the virus. D) it can be prevented with the same vaccine used to prevent chickenpox. E) it occurs only in the tropics.
Which of the following is considered the key innovation that started chordates along the evolutionary path that led to vertebrates?
A. A skin covering the entire body to prevent desiccation B. An internal endoskeleton C. A flexible rod to which muscles are attached, which allowed lateral movement of the back D. Amniotic egg E. A hard shell encasing the body