Beginning with the simplest level of structure, which order of organization of genetic material is CORRECT?
A. nucleotide, DNA, chromosome, gene, genome
B. DNA, nucleotide, gene, genome, chromosome
C. nucleotide, DNA, gene, genome, chromosome
D. DNA, nucleotide, gene, chromosome, genome
E. nucleotide, DNA, gene, chromosome, genome
Answer: E
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The sequence and actions of genes controlling development of the anterior-posterior axis of Drosophila illustrate (Select all correct choices):
A. hierarchical control of gene regulation during development. B. maternal developmental effect. C. that genes controlling development are turned on in groups, with each group acting to refine and narrow the pattern of differentiation generated by previous groups. D. that genes controlling development are turned on in sequence, with each set acting on a different set of cells to specify the cells' ultimate fates.
The information encoded in DNA is used within a cell in a two-stage process. The two stages of this process are called
A) denaturation and renaturation. B) base-pairing and denaturation. C) replication and division. D) transcription and translation. E) replication and transcription.
What is the purpose of the cilia and flagella of cells?
a. They generate the cell’s metabolism. b. They provide movement for the cell. c. They help maintain homeostasis. d. They generate cell signaling. e. They contract muscles
Kansas and Pennsylvania are approximately at the same latitude. Yet why are the potential natural communities in Kansas mostly grassland and in Pennsylvania mostly temperate forest?
A. different vegetation due to different seed banks B. different temperatures C. different levels of moisture D. different altitudes E. different soil texture and pH levels