Biological inquiry has increasingly evolved into a _____ and _____ practice.
A. Hypothesis-driven, evidence-based
B. Fact-driven, fiction-driven
C. Imagination-driven, proof-based
D. Experiment-based, time-based
Ans: A. Hypothesis-driven, evidence-based
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Which of the following would contain genetic material that is 100% identical?
A. Homologous chromosomes B. Sister chromatids C. X and Y chromosomes D. All of the answers are identical
Identify the following as participants in either specific or nonspecific immune responses, and for each provide a onesentence
explanation of its function or role. A. macrophages B. natural killer cells C. memory cells What will be an ideal response?
Organisms are classified based on whether they are made up of prokaryotic or eukaryotic cells. Which statement is correct about the organelles found in eukaryotic cells?
A) All the organelles have a very similar size and shape. B) All the organelles contain the same chemical compounds. C) Each type of organelle can be found in all types of cells. D) Each type of organelle has a specialized function.
In a large population of randomly breeding organisms, the frequency of a recessive allele is initially 0.3. There is no migration and no selection. Humans enter this ecosystem and selectively hunt individuals showing the dominant trait. When the gene frequency is reexamined at the end of the year, __________.
a. The frequency of the homozygous dominants will go down, the frequency of the heterozygous genotype will go down, and the frequency of the homozygous recessives will go up b. The frequency of the homozygous dominants will go down, the frequency of the heterozygous genotype will go up, and the frequency of the homozygous recessives will remain the same c. The frequency of the homozygous dominants will go down, the frequency of the heterozygous genotype will remain the same, and the frequency of the homozygous recessives will go up d. The frequency of the homozygous dominants will go up, the frequency of the heterozygous genotype will go down, and the frequency of the homozygous recessives will go down e. The frequency of the homozygous dominants will go up, the frequency of the heterozygous genotype will go down, and the frequency of the homozygous recessives will go up