A chromosome’s gene sequence that was ABCDEFG
before damage and ABCFG afterward is an example
of
a. inversion.
b. deletion.
c. duplication.
d. translocation.
e. aneuploidy.
Answer: b
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In many ferns,
a. gametes are produced from meiosis. b. asexual reproduction occurs more frequently than sexual reproduction. c. fertilization is followed by formation of gametes. d. the gametophyte stage is completely dependent upon the sporophyte stage. e. more than one of these is true
"Friendly" bacteria located in the vagina that keep harmful bacteria and fungi from growing are
a. Staphylococcus aureus. b. Streptococcus pyogenes. c. Candida albicans. d. Lactobacillus acidophilus. e. Staphylococcus alba.
The evolutionary innovation that first appeared in arthropods and is characteristic of the most successful of all animal groups is that of
A. bilateral symmetry. B. three primary types of tissues. C. coelomic body architecture. D. segmentation. E. jointed appendages.
DNA does not exist as a naked double helix in the nucleus of a cell, but is complexed with proteins to form a fine filamentous material called _________.
Fill in the blank(s) with the appropriate word(s).