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Master genes control the jaw formation of cichlid fish and the beak formation of Galapagos finches by A - VCE - SSCE Biology - Question 31 - 2017 - Paper 1
Question 31
Master genes control the jaw formation of cichlid fish and the beak formation of Galapagos finches by A. controlling the timing of protein production at crucial sta... show full transcript
Worked Solution & Example Answer:Master genes control the jaw formation of cichlid fish and the beak formation of Galapagos finches by A - VCE - SSCE Biology - Question 31 - 2017 - Paper 1
Step 1
A. controlling the timing of protein production at crucial stages of embryonic development.
Answer
Master genes play a critical role in embryonic development by regulating the timing and levels of protein production. This precise control ensures that the right proteins are synthesized at the right stages, facilitating the correct formation of structures, such as jaws and beaks, in cichlid fish and Galapagos finches.
Step 2
Step 3
C. binding with mRNA, preventing gene expression.
Answer
This concept refers to gene regulation mechanisms but is not the primary function of master genes in controlling traits like jaw and beak formation. Master genes do not typically bind with mRNA to prevent expression but rather facilitate the correct expression at the right time.
Step 4
D. cutting DNA sequences at specific points.
Answer
This describes a method used in genetic engineering (e.g., CRISPR technology) but does not accurately represent how master genes function in controlling jaw and beak development, as they primarily regulate gene expression rather than perform physical cuts on DNA.