Griffith found that a mouse injected with the green 'R' bacteria lived. When injected with the red 'S' bacteria died but if injected with dead 'S' bacteria, the mouse lived. In the image here, the mouse was injected with dead 'S' bacteria along with the live 'R' bacteria. The mouse then died.
Who followed up this experiment to determine what "transforming principle" caused the mice to die?
Answer: Oswald Avery and Maclyn McCarty
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In mice the allele for colored fur (C) is dominant to
the allele for albinism (c). The allele for normal behavior (W) is dominant to that for waltzing movement (w). Give the probable genotypes of the parents if they produced the offspring listed after the following crosses: (a) colored normal x white waltzer produced 10 colored normal, 8 colored waltzers, 2 white waltzers, 11 white normal (b) colored normal x white normal produced 35 colored normal, 13 colored waltzers (c) colored normal x colored normal produced 37 colored normal, 14 colored waltzers, 9 white normal, and 5 white waltzers What will be an ideal response?
The founder effect is an important component of ____
a. natural selection b. genetic drift c. gene flow d. inheritance e. mutations
Which of the following statements concerning malignant melanoma is false?
a. It is the fastest growing (in number of incidents) form of skin cancer. b. It is the most lethal form of skin cancer. c. It is the third most common form of cancer in humans. d. Its highest incidence is in light-skinned individuals. e. It is caused by excessive exposure to UV irradiation.
Ventricular contraction normally begins at the apex (bottom of the heart). What would likely happen if ventricular contraction originated at the intersection of the atria and the ventricles instead?
A) Blood would be pumped through the semilunar valves. B) Blood would be pumped into the pulmonary artery and aorta. C) Blood would be pumped back into the atria. D) Blood would be pumped down to the apex of the heart.