How does the bicoid protein provide positional information along the anterior-posterior axis of the fly embryo? a. it is present at high concentration at the anterior end and low concentration at the posterior end. b. different forms of bicoid protein exist at different locations along the anterior-posterior axis. c. it is present at high concentration at the posterior end and high concentration at the anterior end. d. bicoid protein is present at a uniform concentration along the anterior-posterior axis.

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.