Biology > EXAM > BIO 245 Exam 1 Study Guide (All)

BIO 245 Exam 1 Study Guide

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Allele Correct Answer: An alternative form of a gene. Anaphase Correct Answer: 3rd stage of Mitosis where the spindle fibers move towards opposite poles. Annealing Correct Answer: the process ... in which two complementary segments of DNA bind to each other. Antiparallel Correct Answer: The opposite arrangement of the sugar-phosphate backbones in a DNA double helix. Autosome Correct Answer: Any chromosome that is not a sex chromosome Backbone Correct Answer: the portion of a DNA or RNA strand that is composed of the repeated covalent linkage of the phosphates and sugar molecules. Bacteriophage Correct Answer: A virus that infects bacteria Barr Body Correct Answer: A dense object lying along the inside of the nuclear envelope in cells of female mammals, representing a highly condensed, inactivated X chromosome. Base pairs Correct Answer: Pairs of nuleotides that bond the two strands of DNA together Bidirectional DNA replication Correct Answer: new DNA is synthesized in both directions from the single origin, creating an expanding replication bubble Carrier Correct Answer: A person whose genotype includes a gene that is not expressed in the phenotype. Cell Cycle Correct Answer: An ordered sequence of events in the life of a eukaryotic cell, from its origin in the division of a parent cell until its own division into two. Centromere Correct Answer: Area where the chromatids of a chromosome are attached Centrosome Correct Answer: Cellular organelle consisting of two centrioles. [Show More]

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