Canine phosphofructokinase (PFK) deficiency afflicts Springer spaniels, affecting an estimated 10% of the breed. Given its critical role in glycolysis, one implication of the genetic defect resulting in PFK deficiency in dogs is _____
A) early embryonic mortality
B) elevated blood-glucose levels in the dog's blood
C) an intolerance for exercise
D) a reduced life span
Answer: C
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When a population is made up of individuals
who are genetically identical, each individual is said to be a ____ of other individuals.
a. homolog b. clone c. twin d. recombinant e. probe
Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes.
McGraw-Hill EducationWhich egg is isotonic to the solution?
A. Egg 1 B. Egg 2 C. Egg 3
A layer of lipoprotein and glycoprotein that covers the outer surface of some viruses is the
A. viroid. B. capsid. C. membrane. D. envelope. E. casing.
Natural selection ___________.
A. is independent of time or place B. is more of a creative process than an editing process C. and evolution cannot be directly observed D. relies on variation among individuals in a population