Which of the following statements is
CORRECT about mutation?
a. Mutations caused by environmental factors
are always repaired.
b. Mutations occurring during the replication
process are always harmful.
c. Mutations only occur during DNA
replication.
d. Mutations occurring during the replication
process only affect the secondary structure
of proteins.
e. Mutations are permanent changes in the
base sequence of DNA.
E
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The basic contractile unit of a muscle is called the:
A. sarcomere. B. myofibril. C. muscle fiber. D. thick filament. E. Z disc.
Which of the following methods would NOT
result in identical twin organisms?
a. asexual reproduction b. embryo splitting c. reproductive cloning d. somatic cell nuclear transfer e. two separate eggs fertilized by two separate sperm
Sexual dimorphism occurs when males and females are so similar morphologically that they are difficult to distinguish
Indicate whether the statement is true or false
What is a lod score?
A) determination of how often double crossovers occur B) determination of how often a gene mapping experiment gives the correct results C) a method using cell fusion to determine on which chromosome a gene resides D) determination of the probability that two traits are linked by analyzing pedigrees E) a calculation to show how much interference is occurring in crossover formation