The breast cancer gene BRCA1 has a very similar sequence in humans, mice, and gorillas, due to its origination in a common ancestor. The BRCA1 genes in these species are examples of ________.
A. synteny
B. paralogs
C. orthologs
D. polyploidy
Answer: C
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When viewing a cell culture under a microscope, most cells would be in which phase of cell cycle?
a. telophase b. interphase c. metaphase d. cytokinesis e. prophase
The sex chromosome composition of a person
with Turner syndrome is a. XXX. b. XO. c. XXY. d. XYY. e. none of these
Which organelles serve as the energy centers for most protists?
A. mitochondria and endoplasmic reticulum B. mitochondria and plastids C. mitochondria and nucleus D. chloroplasts and Golgi bodies
Comb jellies may not be the most familiar animal to you, but they are critical in the food chain because they make up a significant portion of the planktonic biomass
Their feeding strategy is predatory and involves adhesives or mucus on their tentacles or other body parts. What feeding tactic do these animals use? A) suspension feeder B) fluid feeder C) deposit feeder D) food-mass feeder