Autistic and typical children mastered a simultaneous discrimination task with three sets of all-tactile compound stimuli. During training, responding to one stimulus (S+) resulted in rewards whereas responding to the alternative (S-) was extinguished. Test 1 was conducted with recombinations of S+ and S- elements. In Test 2, the test stimulus to…

Genome science, including topics such as gene recombination, cloning, genetic tests, and gene therapy, is now an established part of our daily lives; thus we need to learn genome science to better equip ourselves for the present day. Learning from topics directly related to the human has been suggested to be more effective than learning from…

Provides a model for the process of invention and illustrates it through an analysis of Shakespeare's 33rd sonnet. (DD)

Describes a student kinetic experiment involving second order kinetics as well as displaying photochromism using a wide variety of techniques from both physical and organic chemistry. Describes measurement of (1) the rate of the recombination reaction; (2) the extinction coefficient; and (3) the ESR spectrometer signal. (Author/JN)

Directional translocation by helicases results in duplex separation and displacement of bound proteins which allows for the DNA processing events associated with DNA repair, replication, recombination, and transcription. Unresolved questions regarding DNA helicases include: (1) how is directional translocation determined in SF2 helicases; (2) do…

Discusses how, in some circumstances, a two-body reaction (association in absence of a third body) is the only possible association, and how reactions proceed in this case. Taking competition between two/three-body reactions into account, considers relative importance of such combinations and conditions under which the former can be competitive.…

Describes a set of biochemistry laboratory experiments in which tetrameric hemoglobin is separated into its subunits then formed again by recombination of the subunits. (MLH)

Down syndrome (DS) is the most commonly identified genetic form of mental retardation and the leading cause of specific birth defects and medical conditions. Traditional epidemiological studies to determine the prevalence, cause, and clinical significance of the syndrome have been conducted over the last 100 years. DS has been estimated to occur…

Outlines procedures for demonstrating and preparing a permanent slide of sister chromatid exchanges and recombination events between the two chromatids of a single chromosome. Provides the name of an additional resource for making preparations of exchanges. (RT)

Supplementary recombination narratives intended for use with the 1961 edition of the text "A-LM French One" are designed to help students learn to manipulate basic textual materials. The sample narratives correlate with Units 4-14 of the text. The teacher is urged to make use of the overhead projector when using the narratives for the…

In a model of the functioning of short term memory, the encoding of information for subsequent storage in long term memory is simulated. In the encoding process, semantically equivalent paragraphs are detected for recombination into a macro information unit. (HOD)

This experiment is designed specifically for students with little knowledge of radical reactions and provides an introduction to the gas-phase chemistry of radicals. Experimental planning based on the student's own observation is an important component of the experiment. (Author/MA)

This booklet of cartoon guides contains 83 units of instructional materials prepared by the Defense Language Insitute for use in an intensive, conversational, Russian course. Included are cartoon guides to dialogues and dialogue recombinations which focus on social concerns and military matters. (RL)

An activity that introduces students to the concepts of independent assortment of alleles during meiosis and gametogenesis, the richness of the variation that occurs as a result of allele recombination, and the unique phenotypes of offspring. Reproducible handouts with the directions and model chromosomes are provided. (KR)