The enzyme that HIV uses to copy its RNA into DNA is
A. RNA integrase.
B. transcriptase.
C. reverse transcriptase.
D. DNA polymerase.
E. RNA polymerase.
C. reverse transcriptase.
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Some genetic mutations occur from exposure to external agents called ____, such as radioactivity, ultraviolet radiation from the sun, and certain natural and human-made chemicals.
A) ?mutagens B) ?heritable traits C) ?keystones D) ?niches E) ?antibiotics
A monohybrid (one-gene) cross yields 4 genotypic classes, and a dihybrid (two-gene) cross yields 16. How many classes are expected from a tetrahybrid (four-gene) cross?
What will be an ideal response?
If a poly(C) is used as an mRNA and translated, a poly-glycine polypeptide is formed. If on the other hand a poly(G) mRNA is used, a poly-proline polypeptide is made
However, if both poly(C) and poly(G) are used in the same reaction, no polypeptide is made. Explain why.
What is the term used to define a secondary sexual characteristic in males, such as manes on lions or colorful plumage on peacocks?
A. gene flow B. fitness C. sexual selection D. sexual dimorphism