A trait that enhances an individual’s fitness is
called ___ trait.
a. an adaptive
b. a fitness
c. a selective
d. an artificial
e. a natural
A
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Which of the following statements applies to homologous nonsister chromatids?
A) Their centromeres are attached during meiosis II. B) They are genetically identical. C) They segregate from each other at anaphase of mitosis. D) They contain the same genes in the same order but may have different alleles of some genes. E) More than one statement applies to homologous chromatids.
In a mycorrhizal association, the fungus benefits mainly by
a. absorbing water from the plant. b. using the plant roots as a growth surface. c. absorbing mineral ions from the plant. d. providing water to the plant. e. absorbing carbohydrates from the plant.
Plants that have a distinct haploid stage and diploid stage exhibit:
a. parthenocarpy. b. binary generations. c. alternation of generations. d. asexual and sexual generations. e. mitotic and meiotic generations.
The current problem with the genetically modified Hawaiian papaya plants that were first created in the 1980s is that they __________.
a. spoil too quickly b. contain substances toxic to humans c. are no longer able to reproduce d. are not resistant to a root fungus