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Question 6 3 out of 3 pointsComplex DNA repair mechanisms in many organisms is a challenge to Darwinian evolution because DNA repair is complex involving many proteins and Darwinian evolution would need to evolve all of these proteins simultaneously.Question 7 3 out of 3 points
A tumor is cancerous or malignant if it infiltrates nearby tissue. This infiltration and spreading is called metastasis.Question 8 0 out of 3 pointsWhich of the following are sources of potential mutation are found in our typical human environments?Question 9 3 out of 3 pointsA point mutation that changes a codon specifying an amino acid into a “stop” codon UAA, UAG or UGA is a nonsense mutation.Question 10 3 out of 3 points
The cell cycle has checkpoints which ensure that the cell cycle is running correctly and cell growth stops at the appropriate time.Question 11 0 out of 3 pointsWhich of the following is true about mutations?