Which disorder is characterized by the individual having a normal number of sex chromosomes?
A) Turner syndrome
B) Klinefelter syndrome
C) Trisomy X
D) XYY syndrome
E) Down syndrome
E
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First observed by Lederberg and Zinder (1952) in Salmonella typhimurium
A. Transformation B. Transduction C. Conjugation D. All of the answers are correct
A researcher is using molecular phylogenetic techniques to determine the evolutionary relationships of a large set of animal species. Which type of species are most likely to have been wrongly classified based on morphology alone?
A. Parasitic species B. Aquatic species C. Bilateral species D. Terrestrial species E. Species with spiral development
Which of the following experimental techniques involves treating a genetic disorder by replacing a defective gene with a functional gene?
A.) genetic screening B.) bioinformatics C.) genomics D.) gene therapy
Your brain is a structure composed of different kinds of tissue. What is this kind of structure called?
a) organ system b) cell c) tissue d) organ