3. Below is the nitrogen base sequence for a strand of DNA. UAU-UGG-GUG-CUA
A mutation occurs and the nitrogen base cytosine is
replaced with adenine in the sequence above. Using the
amino acid chart below, determine if a detectable change in
protein synthesis has occurred?
Tyrosine Leucine Tryptophan Isoleucine Valine
UAU CUC
UGG
AUU
GUC
UAC CUU
AUC GUA
CUA
AUA
GUG
A No, the protein will remain the same despite the
change in nitrogen bases.
B Yes, Leucine is changed to Tyrosine.
C Yes, Leucine is changed to Isoleucine.
D Yes, Valine is changed to Isoleucine.

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes