Assume each of the following letters represents an amino acid. What type of gene mutation occurred to produce the following protein sequence?
Normal: JAYBIRDCATPAW
Mutated: JAYBIRDBATPAW
A. nonsense
B. missense
C. silent
D. sense
E. frameshift
B. missense
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The total amount of water in the hydrologic cycle has been decreasing over the last million years.
Answer the following statement true (T) or false (F)
Which of the following is NOT an example of a pronatalist pressure?
A. Children are a source of pride, pleasure, and comfort. B. Children can contribute to the household income. C. Children may support their parents as they grow older. D. Children can replace members of society as they die. E. All of the above are examples of pronatalist pressures.
Most fetuses can survive outside the womb after a minimum of ________ weeks
A) 32 B) 45 C) 15 D) 38 E) 20
In a metabolic pathway, substrate Z is broken down to form products Y and X. Y is further broken down into products V and W. How many enzymes are required for this metabolic pathway?
A. three B. two C. four D. one E. five