A ________, a ________, and a ________ are the major parts of a nucleotide, whereas a ________ and a ________ are the major parts of a nucleoside
Fill in the blank with correct word.
Answer: phosphate group, pentose sugar (ribose or deoxyribose), aromatic base (in any order); pentose sugar, aromatic base (either order)
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A flowering vine plant, Gelsemium spp., includes two separate species that formerly occupied a large, common habitat area, and currently occupy overlapping areas in the southeastern United States. Gelsemium sempervirens and Gelsemium rankinii have reproductive isolation, which has allowed them to exist as separate species due to speciation.
A. postzygotic B. prezygotic C. parapatric D. sympatric E. allopatric
A mutation that has pleiotropic consequences
A) results in a single symptom in the affected person. B) may result in only slight symptoms in a person with the mutation. C) is only detected in homozygotes. D) has widespread consequences in the affected person. E) cannot be detected by enzyme assay.
Zonation within a community is typically the result of differences in the
A) patterns of predation among species within a community. B) rates of reproduction among species within a community. C) patterns of competition among species within a community. D) physical characteristics of the environment across a spatial gradient.
Vaccines ________.
Fill in the blank(s) with the appropriate word(s).