Molecular barcodes are
A. barcodes stamped on vegetables in the supermarket to indicate freshness.
B. DNA sequences used to identify and catalog biodiversity.
C. radioactively labeled genes used to detect horizontal transfer of genes.
D. genetic inversions used to detect crossovers.
B. DNA sequences used to identify and catalog biodiversity.
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Which of the following plant structures shares the most common features and functions with a fungal hyphae?
A) stomata B) vascular cambium C) lenticels D) root hairs E) prop roots
Which of the following is NOT an example of
sensory adaptation? a. a loss of the sense of pressure of clothes against the skin b. adjustment to repeated jumping into a body of cold water c. response to lack of oxygen at high altitudes d. eventual loss of awareness of a constant noise e. the loss of the ability to smell a person’s perfume after being in that person’s presence for some time
Lepidopterans (moths and butterflies) sometimes have specialized flying behaviors. Some moths have the ability to do sudden vertical drops when they detect bat sonar, to avoid being eaten. Other species use special flying techniques to attract a mate.When biologists talk about the "cause" of a behavior, they may be referring to two different things. The proximate cause is the sequence of physiological events that lead to the behavior in an individual. The ultimate cause is the adaptive benefit to the animal that allowed natural selection to sculpt the behavior over evolutionary time. Understanding both the proximate and ultimate basis of behavior is important, and different types of biologists may focus on each.What could you study to better understand the ultimate basis of this
behavior? (Check all that apply) A. flying behavior in related species B. wing muscle development C. sensory organs D. physiology E. brain structure F. mating behavior G. predation H. hormones
Fifth disease
A. in immunodeficient children, destroys red blood cell stem cells. B. involves pathogen capable of crossing the placenta. C. is a childhood febrile disease with a bright red rash on the cheeks. D. is caused by Parvovirus B19. E. All of the choices are correct.