A virus contains _______ as its genetic material

Fill in the blank(s) with the appropriate word(s).


DNA or RNA

Biology & Microbiology

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Which of the following is evidence supporting the Lyon hypothesis of X inactivation?

A. Female mammals that are heterozygous for X-linked traits are phenotypic mosaics. B. A highly condensed structure is consistently observed in female cells, but not in normal male cells. C. A female cat that is homozygous for coat color cannot have a calico phenotype. D. Calico patterns of coat color are never exactly the same. E. All of these are correct

Biology & Microbiology

Molecules brought into the cell from the exterior are placed into vesicles for routing to other locations

such as ____.

a. the nucleus b. lysosomes c. mitochondria d. ribosomes e. cholorplasts

Biology & Microbiology

Which of the following is mostly performed by bacteria living within the roots of plants in the legume family?

a. nitrification b. ammonification c. nitrogen cycling d. nitrogen fixation e. nitrogen assimilation

Biology & Microbiology

Which of the following best describes the basis for separation of DNA fragments during agarose gel electrophoresis?

A. The smallest fragments will migrate fastest. B. The fragments with the highest percentage of A and T will migrate fastest. C. The fragments with the highest percentage of G and C will migrate fastest. D. The largest fragments will migrate fastest.

Biology & Microbiology