Which of the following is a possible phenotpic outcome resulting from a mutation?
A. Reduced fitness
B. Enhanced fitness
C. No effect on fitness
D. All of the above
E. None of the above
D. All of the above
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Because there are so many HLA allele combinations, it is rare to find unrelated individuals with the same HLA halplotypes
a. True b. False Indicate whether the statement is true or false
The force that blood exerts on artery walls is termed _____ pressure.
A. venous B. gravitational C. blood D. osmotic E. pulmonary
Which of the following is not a structure used for bacterial adhesion?
A. Fimbriae B. Adhesive slime or capsules C. Specialized receptors D. Surface proteins E. Cilia
What environmental challenge is posed to young plants by an old growth forest?
A. high temperatures B. thick leaf litter C. low light D. low humidity