Which of the following is an example of therapeutic cloning?
a. Splitting an embryo into two halves to produce two embryos within a laboratory
b. Using cells from a cloned human embryo for medical purposes
c. Asexual cloning in bacteria
d. Transferring DNA of an adult donor's body cell into an unfertilized egg
e. Splitting of an embryo within the uterus, producing identical twins
b
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Which of the following are examples of gonadotropins?
A. prolactin and oxytocin B. follicle-stimulating hormone and oxytocin C. luteinizing hormone and estrogen D. prolactin and estrogen E. follicle-stimulating hormone and luteinizing hormone
In crosses involving complete dominance, the F2 genotypic ratio is 1:2:1 and is expressed as a
phenotypic ratio of ____________________. Fill in the blank(s) with the appropriate word(s).
A microbiologist explains to one of her biology classes that her research focuses on the nucleoid region of the cholera bacteria. This means that she is studying a region within the bacterium that contains the
A. peptidoglycan. B. nuclear membrane. C. nucleic acids. D. R plasmids.
Over 470,000 cases of cholera were reported in Haiti in the two years following the 2010 earthquake. Which of the following was the most likely mode of transmission?
A) mosquitoes B) aerosols C) contact D) contaminated water E) contaminated milk