Tapeworms belong to class Trematoda
____________________ Indicate whether the statement is true or false.
F, Cestoda
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What is the definition of neoteny?
A. retention of juvenile characteristics in an adult B. reaching reproductive maturity in a juvenile C. the acquisition of complex language skills in an adult D. acquisition of adult characteristics in a juvenile E. accelerated aging in the adult
When a species is introduced into a habitat that is not its natural ecosystem, the species could become "invasive." Which of the following is NOT a characteristic of an "invasive" species?
a) invasive species will spread very quickly through a habitat b) invasive species will outcompete the native species for resources c) invasive species are often introduced either accidentally or purposely by humans d) invasive species never have negative effects on a new habitat's biodiversity e) invasive species can lead to the extinction of other native species
What is the order of the three main steps in a PCR?
A) denaturation, annealing primers, elongation B) denaturation, elongation, annealing primers C) annealing primers, denaturation, elongation D) elongation, annealing primers, denaturation
Methylene blue can be used to stain DNA because
A. DNA is negatively charged. B. changes the pH and therefore the structure of DNA. C. covalently bonds with DNA. D. makes DNA electron dense. E. is an effective fixing agent for nucleic acids.