Genes at one locus that affect the expression of
genes at a different locus are said to be
a. epistatic.
b. linked.
c. codominant.
d. penetrant.
e. alleles
A
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SCNT with human cells is called _____
Fill in the blank(s) with correct word
What condition develops when GABA levels in the brain are deficient?
A. epilepsy B. insomnia C. Huntington's disease D. Alzheimer's disease E. Parkinson's disease
Why have some microbiologists proposed using ribosomal RNA as the basis for defining bacterial species?
A. Ribosomal RNAs are highly conserved genetic sequences present in all prokaryotes. B. the "interbreeding population" criterion does not apply to bacteria. C. ribosomal RNA is the basis for domain assignment. D. bacteria vary too little in their physical and biochemical traits. E. bacteria are not interbreeding populations, and ribosomal RNAs are highly conserved genes present in all prokaryotes.
Molly, a 3-year-old active preschool girl, spent the morning playing with the other children at the day-care center. Shortly after lunch, she began to appear very flushed with bright red cheeks, and a check of her temperature revealed a low-grade fever of 99.5. She seemed to feel normal and showed no other signs of illness. Which of the following would be the most likely cause of her fever and bright red cheeks?
A) Human Parvovirus B19 B) Roseola virus (Human herpesvirus 6) C) Varicella-zoster virus D) Herpes simplex virus E) Cytomegalovirus