The study of biological diversity and evolutionary relationships among organisms is
A. nomenclature.
B. ecology.
C. systematics.
D. taxonomy.
E. biology.
Answer: C
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There is a phenomenon called parental leakage, in which a small amount of the mitochondrial DNA from the father is found in the offspring
If parental leakage is assumed to have occurred throughout human history, how does it change our interpretation of Matthias Krings and Svante Päabo's studies of mitochondrial DNA in specimens of Neanderthals and modern humans? A. If the paternal mitochondrial DNA did show up in the offspring alongside maternal mitochondrial DNA, these would have immediately indicated that the two groups interbred. B. The results would have been exactly the same because researchers were looking at only female modern humans in this study. C. Mitochondrial DNA coming from the father would negate all of the advantages of using mtDNA as the source for genetic information in the first place, so the whole study would be useless. D. The results would have been exactly the same because researchers were looking at only modern humans that were males for this study. This means it wouldn't have mattered if paternal leakage occurred or not.
Energy that is useable and organized is classified as having ____
a. low energy b. low entropy c. low enthalpy d. high entropy e. high energy
Which of the following is present in a prokaryotic cell?
A) mitochondrion B) ribosome C) chloroplast D) ER
Binding of IgE to the surface of sensitized cells leads to (activation/degranulation/lysis) of the cell, releasing many inflammatory chemicals
What will be an ideal response?