[Campbell Biology P.436] Which of the following statements accurately describe the significa... | Practice Question

Which of the following statements accurately describe the significance of the bicoid research, or the concept of a morphogen as illustrated by Bicoid? Select all that apply

  • A: It identified a specific protein (Bicoid) crucial for early pattern formation.
  • B: It demonstrated that a gradient of morphogens can determine polarity and positional information in an embryo.
  • C: It highlighted the critical role of maternal gene products in initiating embryonic development.
  • D: It showed that *bicoid* is a homeotic gene responsible for antenna development.
  • E: It established that *bicoid* mRNA is primarily responsible for establishing the dorsal-ventral axis.

Explanation

The text explicitly states that bicoid research 'led to the identification of a specific protein required for some of the earliest steps in pattern formation' A , 'increased our understanding of the mother's critical role in the initial phases of embryonic development' C , and established the 'principle that a gradient of morphogens can determine polarity and position' B . Options D and E misrepresent the role of bicoid or assign a primary role in D-V axis determination that is not explicitly supported.