What personal characteristics and events in Gregor Mendel's life significantly contributed to his ultimate contribution to the study of inheritance?
A. His training in physics and mathematics at the University of Vienna.
B. He failed his natural history exam.
C. He got a job as a substitute teacher and enjoyed it.
D. He failed his physics exam.
E. He got his teaching license at the age of 21.
Answer: A
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Point mutations are referred to as missense, silent, frameshift, or nonsense when they change the protein-coding potential of a gene. What is another group of mutations that may have important consequences for gene expression?
A) Mutations that exist outside coding sequences. B) Combinations of missense and silent mutations. C) Combinations of nonsense and silent mutations. D) Mutations that alter the amino acid sequence of a gene. E) Mutations that shift the reading frame of a gene.
Which of the following are bone-forming cells?
A. lacunae B. osteoblasts C. osteoclasts D. osteocytes
Anabolic-androgenic steroids are ____
a. synthetic forms of testosterone b. synthetic forms of estrogens c. used to treat early puberty d. natural variants of testosterone e. natural variants of estrogen
Cholesterol can be remodeled into
a. bile salts. b. sex hormones. c. steroids. d. vitamin D. e. all of these.