Multiple Choice
Which statement best describes the bottleneck effect in ape populations?
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3. Extensions to Mendelian Inheritance
Overview of interacting Genes
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The bicoid gene product is directly responsible for _____ in a developing Drosophila embryo.
A
determining posterior identity
B
establishing anterior structures
C
initiating apoptosis in neural cells
D
segmenting the embryo into parasegments
Verified step by step guidance1
Understand the role of the bicoid gene product in Drosophila embryogenesis. The bicoid gene is a maternal effect gene that produces a protein gradient in the early embryo.
Recall that the bicoid protein acts as a morphogen, meaning it provides positional information to cells based on its concentration gradient.
Recognize that the highest concentration of bicoid protein is at the anterior (front) end of the embryo, which influences the development of anterior structures.
Note that the bicoid protein does not determine posterior identity, initiate apoptosis, or segment the embryo into parasegments; these functions are controlled by other genes and gene products.
Conclude that the bicoid gene product is directly responsible for establishing anterior structures in the developing Drosophila embryo.
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