The Human Microbiome
What will be an ideal response?
•Humans normally carry at least 10 times more prokaryotic cells than eukaryotic cells (and 100x more prokaryotic genes).
•Microbial populations develop just after birth and remain there throughout entire lifespan.
•Not just contaminants; our indigenous microbiome provides many protective and nutritional roles.
-Microbes colonize wherever our body meets the environment
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Color blindness is an X-linked recessive gene. Two normal-visioned parents produce a color-blind
child. (a) Is this child male or female? (b) What are the genotypes of the parents? (c) What are the chances that their next child will be a color-blind daughter? What will be an ideal response?
Which of the following characteristics of the structure of DNA was determined directly from X-ray diffraction photographs of crystallized DNA?
A. the double helical structure B. the length of a given DNA molecule C. the frequency of A versus T nucleotides D. the sequence of nucleotides
Enterococcus faecalis has been associated with ________.
A. endocarditis B. sinus infection C. abscesses D. diarrhea
Which of the following is a feature shared by viruses and living organisms?
A) possession of a genome that directs synthesis of materials necessary for replication B) presence of cytoplasm C) metabolic capability D) responsiveness E) the ability to increase in size