In meiosis, chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during
A. metaphase II.
B. prophase II.
C. prophase I.
D. interphase II.
E. metaphase I.
A. metaphase II.
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According to the figure above, a species has the highest chance of extinction when _____
A) the island is large and close to the mainland B) the island is small and close to the mainland C) the island is large and remote D) the island is small and remote
Which of the following describes the second step in a DNA polymerase reaction?
A. The 3'-OH attacks the ? phosphorus of the incoming dNTP. B. Pol I translocates, positioning the newly added nucleotide in the postinsertion site. C. Incoming dNTP enters the insertion site. D. PPi is hydrolyzed by pyrophosphatase to prevent the back reaction. E. After translocation, the insertion site is now available for entry of the next dNTP.
In spongy bone tissue the spaces are filled with
a. air. b. blood. c. cartilage. d. marrow. e. lymph.
You must prevent ______ and practice ________ techniques
Fill in the blank(s) with the appropriate word(s).