Prenatal testing in the second trimester is conducted for the purpose of collecting mitotic cells in order to prepare a karyotype. Which mitotic phase is the preferred phase to analyze?
a. metaphase
b. prophase
c. anaphase
d. telophase
Answer: a. metaphase
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In plants and some fungi, individuals that form the diploid generation are called ____
a. spores b. sporophytes c. gametophytes d. spermatozoa e. ova
Hershey and Chase's experiment with radioactively labeled viruses made use of the fact that protein,
but not DNA, contains A. phosphorus. B. iron. C. sulfur. D. nitrogen. E. potassium.
Arthropods with mandibles, a single pair of antennae, and two legs on most body segments are:A
ribbon worms. B. centipedes. C. millipedes. D. trilobites. E. mites.
Figure 27.5
Use the figure above to answer the following question.
The letter "A" in the accompanying figure represents ____.
A. sclerenchyma fibers B. parenchyma C. xylem D. epidermis E. phloem