Groups of related, but distinctly different genes that appear to have arisen from a single ancestral gene are referred to as
A. segmental duplications.
B. expressed sequences.
C. tandem clusters.
D. pseudogenes.
E. multigene families.
Answer: E
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Which of the following statements is a valid conclusion of this experiment?
A) Balanus can survive only in the lower intertidal zone because it is unable to resist desiccation. B) Balanus is inferior to Chthamalus in competing for space on rocks lower in the intertidal zone. C) The two species of barnacles do not compete with each other because they feed at different times of day. D) The removal of Balanus shows that the realized niche of Chthamalus is smaller than its fundamental niche. E) These two species of barnacle do not show competitive exclusion. F) If Chthamalus were removed, Balanus's fundamental niche would become larger.
Diphtheroids
A. are part of the normal microbiota of the skin. B. are responsible for body odor. C. include P. acnes. D. include Malassezia spp. E. are part of the normal microbiota of the skin, are responsible for body odor, AND include P. acnes.
A flower with petals, sepals, and one carpel but no stamens is ____
a. perfect and incomplete b. imperfect and complete c. imperfect and incomplete d. perfect and complete e. sterile
Chytrids are the only fungi with flagellated gametes and spores.
Answer the following statement true (T) or false (F)