Describe the transmission-based precautions you need to institute for J.L.
Answer:
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What is the basis of the food chains in pelagic ecosystems?
a. Detritus b. Zooplankton c. Phytoplankton d. Seaweeds
Explain what is meant by the term heteroduplex in the context of bacterial transformation
What will be an ideal response?
You are given the chemical code of one-half of a DNA double helix: CATGATTACCTAGAATCCTGTAAT. Which of the following sequences represents the codons and anticodons that would be used in creating a protein if the other half of the DNA strand is the coding strand?
A. mRNA codons: CATGATTACCTAGAATCCTGTAAT tRNA anticodons: CATGATTACCTAGAATCCTGTAAT B. mRNA codons: CAUGAUUACCUAGAAUCCUGUAAU tRNA anticodons: GUACUAAUGGAUCUUAGGACAUUA C. mRNA codons: CATGATTACCTAGAATCCTGTAAT tRNA anticodons: CAUGAUUACCUAGAAUCCUGUAAU D. mRNA codons: GUACUAAUGGAUCUUAGGACAUUA tRNA anticodons: CAUGAUUACCUAGAAUCCUGUAAU
Male pipefish rear fertilized eggs in a specialized brood pouch. A study has shown that males will selectively abort female eggs based on female quality. Which of the following is the most likely explanation for this behavior?
a. Male pipefish invest more resources into the production of sperm than fe-male pipefish invest into the production of eggs. b. Certain eggs can endanger a male's survival, so it is not sexual but viability selection. c. Brood care is costly for males. d. A recent population bottleneck caused this maladaptive behavior to reach a high population frequency by chance.