The product detected in a positive Voges-Proskauer test is:
A. Creatine
B. 2,3-butanediol
C. Indole
D. Acetoin
Ans: D. Acetoin
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Sex-linked genes are ____
a. found on autosomes b. only found on the Y chromosome c. only inherited from the mother d. involved in sex determination and can be found on any chromosome e. found on the X and Y chromosomes
Approximately ____ genes have been identified in the genome of Arabidopsis thaliana
a. 5,400 b. 28,000 c. 67,000 d. 120,000 e. 3,200,000
According to the Red Queen hypothesis,
A) the population density of a predator depends on the population density of its prey. B) natural selection should favor the most efficient foragers. C) prey must continually evolve means of avoiding capture to avoid extinction. D) most predators consume a varied diet in order to meet their nutritional requirements.
The MHC (major histocompatibility complex) is NOT important in
A. distinguishing self from non-self. B. recognizing infected cells. C. identifying bacterial pathogens. D. identifying abnormal cells. E. presenting antigenic determinants.