Suppose that Joe Scientist fuses a mouse cell and a human cell, and then treats the cell with specific antibodies covalently linked to fluorescent dyes (antibodies linked to mouse proteins are green; antibodies linked to human proteins are red). Forty minutes later, Joe Scientist looks at the fused cell. What will Joe Scientist observe?
a. The red and green labels will be distributed in intermingled patches.
b. The red and green fluorescent labels will be uniformly distributed across the entire membrane.
c. The red and green labels will flash intermittently.
d. The cell will be half red and half green.
Answer: b. The red and green fluorescent labels will be uniformly distributed across the entire membrane.
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Cultural traits are transmitted horizontally and vertically through learning. Which of the examples below shows the horizontal transmission of culture?
A. A mother teaches her son how to ride a bike. B. A female chimpanzee teaches her offspring to capture termites using a stick. C. A son inherits the recessive form of a gene from his father. D. A teenager teaches her brother how to text. E. None of a-d are examples of horizontal transmission of culture.
Between which individuals would an organ transplant have the least chance of rejection?
1.siblings 2.fraternal twins 3.identical twins 4.mother and child
If two organisms look completely different but you suspect they may be related, which of the following would be the most useful information to have?
A. fossils B. anatomical information C. DNA comparisons D. None of these answers is useful.
Consider the following proposed determining function for a student's grade on the econometrics final, FinalGradei = 68 + 4 HoursStudiedi - 2 Num Other Finalsi + Ui, where hours studied is the number of hours studied during finals week by student i, and number of other finals is the number of other finals student i has during finals week. Derive the formula for the change in a student's final grade with respect to a unit change in the number of other finals the student has in finals week.
A. Final Grade equals 66. B. Final Grade increases by 2. C. Final Grade decreases by 2. D. Final Grade increases by 4.