Which of the following treatments is not used to kill bacteria?
A) Heat
B) UV radiation
C) Gamma radiation
D) Drying
E) All these methods are commonly used to kill bacteria.
Ans: D) Drying
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In Morgan's experiments, the white eye allele in Drosophila was shown to be
A. located on the X chromosome. B. located on the Y chromosome. C. dominant. D. located on an autosome. E. codominant.
Moistening and lubrication of food occurs in
the human a. mouth. b. esophagus. c. stomach. d. duodenum. e. jejunum
If a trait is X-linked recessive, who would express the trait?
A) females homozygous for the dominant allele and males hemizygous for the recessive allele B) heterozygous females and males hemizygous for the dominant allele C) females homozygous for the recessive allele and males hemizygous for the recessive allele D) females homozygous for the recessive allele and males hemizygous for the dominant allele E) the same proportions of females and males
Among the cultural behaviors observed in wild chimpanzees is
A. stone tool making B. termite fishing C. lemur hunting D. All of the above