The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 16 gm to 24 gm. Which of the following natural selection operate on this species?

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#Question id: 10968

#Unit 7. System Physiology – Animal

Which of the following is TRUE concerning erythroblastosis fetalis (hemolytic disease of the newborn, HDN)?

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#Question id: 4035

#Unit 3. Fundamental Processes

Which of the following is most involved in elongation of the RNA transcript?

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#Question id: 3533

#Unit 8. Inheritance Biology

What would be the frequency of dominant phenotype for all character individuals from a mating of two AaBbCc individuals?

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#Question id: 31032

#Unit 4. Cell Communication and Cell Signaling

Which of the following amino acid phosphorylation is required for the activation of PKA? 

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#Question id: 4618

#Unit 11. Evolution and Behavior

Which of the following observations helped Darwin shape his concept of descent with modification?