Which of the following two lineages are thought to have evolved from a protist ancestor?
A. Bacteria and plants
B. Plants and fungi
C. Fungi and animals
D. Plants and animals
Ans: C. Fungi and animals
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Which of the following DOES NOT correctly complete this statement: The MHC (major histocompatibility complex) is important in
A. distinguishing self from non-self. B. recognizing infected cells. C. identifying bacterial pathogens. D. identifying abnormal cells. E. presenting antigenic determinants.
__________ behavior is altered by experience. Fill in the blank(s) with the appropriate word(s)
The ventilation of insect tracheal tubes is dependent upon the presence of:
a. pores. b. alveoli. c. gills. d. spiracles. e. opercula
If there is only random mating in a population and no other selection pressures acting on the population, the expected outcome will be that _________
a) allelic frequencies will remain the same but the genotype distribution will change. b) genotypic frequencies will remain the same but the allelic frequencies will change. c) both the genotypic and allelic frequencies will change. d) both the genotypic and allelic frequencies will stay the same. e) No prediction about genotypic and allelic frequencies can be made from one generation to the next