#Question id: 3314
#Unit 11. Evolution and Behavior
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 14 gm to 16 gm. Which of the following natural selection operate on this species?
#Question id: 26526
#Unit 3. Fundamental Processes
#Question id: 23702
#Unit 13. Methods in Biology
#Question id: 7109
#Unit 5. Developmental Biology
What observation might explain how somites originally become specified to form structures appropriate to their position along the antero-posterior axis?
#Question id: 13117
#Unit 2. Cellular Organization