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Related Concept Videos

Experimental Designs01:16

Experimental Designs

An experimental design is a systematic process that allows researchers to evaluate the relationship between dependent and independent variables. There are three widely used types of experimental design - pre-experimental design, true experimental design, and quasi-experimental design. In pre-experimental design, the researcher compares the data before and after some interventions or treatments. The true-experimental design has more than one purposefully created group, a commonly measured...
Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
Repressible Operon: trp Operon01:21

Repressible Operon: trp Operon

The trp operon in Escherichia coli exemplifies a repressible operon. It regulates the synthesis of tryptophan through repressor-mediated transcriptional control and attenuation. This dual regulatory mechanism ensures tryptophan biosynthesis occurs only when needed, conserving cellular resources.Structure of the trp OperonThe trp operon consists of five structural genes (trpE, trpD, trpC, trpB, and trpA) that encode enzymes for tryptophan biosynthesis. These genes are transcribed as a single...
Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs01:15

Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs

Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...

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CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion
07:37

CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion

Published on: June 25, 2017

Augmented p-rep designs.

Emlyn Williams1, Hans-Peter Piepho, David Whitaker

  • 1Statistical Consulting Unit, The Australian National University, Canberra 0200, Australia. Emlyn.Williams@anu.edu.au

Biometrical Journal. Biometrische Zeitschrift
|January 25, 2011
PubMed
Summary
This summary is machine-generated.

Early generation variety trials in plant breeding can be resource-limited. This study adapts alpha designs for efficient partial replicate (p-rep) designs, reducing the need for control plots in variety testing.

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Massively Parallel Reporter Assays in Cultured Mammalian Cells
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Massively Parallel Reporter Assays in Cultured Mammalian Cells

Published on: August 17, 2014

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CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion
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Published on: June 25, 2017

Massively Parallel Reporter Assays in Cultured Mammalian Cells
11:03

Massively Parallel Reporter Assays in Cultured Mammalian Cells

Published on: August 17, 2014

Area of Science:

  • Agricultural Science
  • Plant Breeding
  • Experimental Design

Background:

  • Early generation variety trials are crucial for plant and tree breeding.
  • Limited resources often necessitate efficient experimental designs.
  • Unreplicated trials with control plots are common but may be suboptimal.

Purpose of the Study:

  • To adapt alpha designs for creating efficient partial replicate (p-rep) designs.
  • To provide an alternative to traditional unreplicated trials with control plots.
  • To optimize resource allocation in early generation variety testing.

Main Methods:

  • Adaptation of established alpha designs.
  • Development of p-rep designs using alpha design principles.
  • Evaluation of design efficiency for variety testing.

Main Results:

  • Demonstration of efficient p-rep designs derived from alpha designs.
  • P-rep designs can eliminate the need for control plots.
  • The proposed method offers a resource-efficient approach to variety trials.

Conclusions:

  • Alpha designs can be effectively modified to create efficient p-rep designs.
  • P-rep designs offer a viable and resource-conscious alternative for early generation variety trials.
  • This adaptation enhances the practicality of plant breeding programs with limited resources.