Homologous chromosomes are held together by
A) a synaptonemal complex.
B) centromeres.
C) kinetochores.
D) spindle poles.
E) bouquets.
Answer: A
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The insects were the first organisms to
(a) show bilateral symmetry. (b) exhibit segmentation. (c) fly. (d) develop lungs.
Chronic myelogenous leukemia (CML) is caused when a segment of chromosome 9 and a segment of chromosome 22 both break off and switch places. How is this mutation classified?
A. deletion B. duplication C. inversion D. translocation E. reciprocal translocation
Which of the following genera fix nitrogen nonsymbiotically?
A. Nitrosomonas B. Nitrobacter C. Rhizobium D. Azotobacter
Identify the major technique that refers to placement of bacteria into a medium such as broth, blood, or a fertilized egg in order to facilitate growth.
A) isolation B) inspection C) inoculation D) identification