Which cells' direct involvement are required for cell-mediated immunity?
A. bacterial cells
B. T-cells
C. viral components
D. B-cells
E. neutrophils
Answer: B
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The pigments responsible for the color of red algae are the prodigiosins
Indicate whether the statement is true or false.
What information can be inferred if the estimated heritability of a trait is approximately 0.50?
A) The environment must have little to no influence over the expression of the trait. B) Genes exclusively control the expression of the trait in at least 50% of the population. C) At least 50% of the variation in the trait in the population is due to genetic differences. D) The environment completely controls the variation in the trait in the population.
The main function of the large intestine is to
A. supply enzymes for digestion. B. remove water. C. absorb nutrients. D. produce vitamins.
A transcription factor, Prx1, is essential for forelimb growth in mammals. The forelimbs of mice are legs and the forelimbs of bats are wings
If the enhancer region of Prx1 in mice is replaced with the enhancer region of the bat Prx1, the resulting fore-limbs of the transformed mice are 6% longer than normal. Explain this result. What will be an ideal response?