Why is it that falcons cannot fly as fast as a fighter jet?
A. Adaptive traits must conform to environmental conditions.
B. Natural selection can produce deleterious alleles in individuals.
C. Adaptive traits are constrained by historical and genetic factors.
D. Not all adaptive traits are heritable.
Ans: C. Adaptive traits are constrained by historical and genetic factors.
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An example of a phenotypic trait where observation of phenotype can easily identify the genetic variation is:
A. color markings in certain invertebrates. B. human skin color. C. human blood type. D. color markings in certain invertebrates and human blood type. E. human skin color and blood type.
Which of the following germicides is/are also sporicidal?
A. Chlorine B. Chlorhexidine C. Betadine D. Phenolics E. All of these except phenolics.
Viruses and bacteria were first cultured in the laboratory at about the same time.
Answer the following statement true (T) or false (F)
Which of the following is NOT part of the male reproductive parts of a flower?
A. ovule B. sperm cells C. microspores D. pollen E. anthers