Specific Predictions

Specific predictions in biology are precise, testable statements about what should occur when defined biological conditions or variables are present, making abstract hypotheses open to empirical evaluation. Researchers derive predictions from biological theories, models, or hypotheses by identifying relevant variables, stating expected relationships or outcomes, and specifying the conditions under which those outcomes should be observed. Experiments and observations then compare predicted results with evidence, allowing scientists to support, refine, or reject explanations. This approach strengthens experimental design, clarifies measurable outcomes, and helps connect biological processes with broader questions in ecology, evolution, genetics, physiology, and cell biology.

Specific Predictions - Related Videos

Education

JoVE Core - Statistics

Sensitivity, Specificity, and Predicted Value

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2025

In healthcare diagnostics, laboratory tests play a crucial role in identifying and diagnosing a wide range of medical conditions. However, interpreting test results is not always straightforward. An abnormal test result does not always confirm the presence of a disease, just as a normal result does not guarantee its absence. To assess the reliability of these diagnostic tools, healthcare practitioners rely on two key statistical indicators: sensitivity and specificity. Sensitivity is the...

Research

JoVE Journal - Bioengineering

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

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Cited by 29 •

2016

We present a three-dimensional (3D) lung cancer model based on a biological collagen scaffold to study sensitivity towards non-small-cell-lung-cancer-(NSCLC)-targeted therapies. We demonstrate different read-out techniques to determine the proliferation index, apoptosis and epithelial-mesenchymal transition (EMT) status. Collected data are integrated into an in silico model for prediction of drug sensitivity.

Predicting Molecular Geometry

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2020

VSEPR Theory for Determination of Electron Pair Geometries The following procedure uses VSEPR theory to determine the electron pair geometries and the molecular structures: Write the Lewis structure of the molecule or polyatomic ion. Count the number of electron groups (lone pairs and bonds) around the central atom. A single, double, or triple bond counts as one region of electron density. Identify the electron-pair geometry based on the number of electron groups: linear, trigonal planar,...

Research

JoVE Journal - Biology
Free Sample

A Protocol for Computer-Based Protein Structure and Function Prediction

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Cited by 79 •

2011

Guidelines for computer based structural and functional characterization of protein using the I-TASSER pipeline is described. Starting from query protein sequence, 3D models are generated using multiple threading alignments and iterative structural assembly simulations. Functional inferences are thereafter drawn based on matches to proteins with known structure and functions.

Prediction Intervals

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2023

The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable. However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y. The...

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