Search results for: Genotype


PheGenI: The Phenotype-Genotype Integrator

A January 2013 update to the PheGenI resource of dbGaP. Changes include: autocomplete search for Traits; example searches; source choice; and enhanced ...


A Beginner's Guide to Punnett Squares

Paul Andersen introduces the Punnett Square as a a powerful tool in genetic analysis. He tries to address major misconceptions that students have when use a ...


Hardy-Weinberg Principle

Understanding allele and genotype frequency in population in Hardy-Weinberg Equilibrium.


Genetics Vocabulary Tutorial

A video tutorial and review of important genetics concepts and vocabulary terms! Words like genes, DNA, alleles, genotype, phenotype, heredity, homozygous ...


Multiple Alleles and Blood Type - A Quick Tutorial

Quick Genetics Tutorial on Blood Type.


Pedigree Analysis 1: How to solve a genetic pedigree No. 1

Biology teacher Andrew Douch explains how to systematically study a genetic pedigree, to determine the most likely mode of inheritance.



For 9th grade general biology class: A brief understanding of how pedigrees work.


Association mapping using PLINK software

PLINK is a free, open-source whole genome association analysis toolset, designed to perform a range of basic, large-scale analyses in a computationally efficient ...


Solving Hardy Weinberg Problems

Paul Andersen shows you how to solve simple Hardy-Weinberg problems. He starts with a brief description of a gene pool and shows you how the formula is ...


Learn Biology: How to Draw a Punnett Square

Check out Bas Rutten's Liver Shot on MMA Surge: A Punnett square is used to predict the chances of an offspring to have its parents' ...


Genotype and Phenotype

A brief introduction to phenotype and genotype for general biology students at Wood River High School. General Biology A Unit 5: Expressing Yourself.


Genotype Expression

053 - Environmental Genotype Effects Paul Andersen explains how genotypes can be expressed or not based on changes in the environment. He starts with a ...


The Lost Genotype-After Effects Project Files

You can download this from


Project Unity tutorial

Project Unity is a collaborative network to host, manage, analyze and share phenotypes and genotypes studies of plants and animals, provided for free to ...


Punnett Square Tutorial

How to use punnett squares to determine genotypic and phenotypic ratio's.


Predicting the Genotypes and the Phenotypes of Offspring using the Punnett Square

This lesson presentation discusses the use of the Punnett Square in predicting the genotype and phenotype probabilities for my 6th Grade Project-Based Inquiry ...


High Resolution Melt Analysis Tutorial

High resolution melt (HRM) analysis is a relatively new technique used in detecting small variations in DNA sequences between varying populations. Important ...


Difference Between Genotypes and Phenotypes

In this video, I show you the difference between Genotypes and Phenotypes. I define them both then show you examples. REMEMBER: Genotypes = What the ...


4.3.2 Determine the genotypes and phenotypes of the offspring of a monohybrid cross

A monohybrid cross is one that involves only one trait. Here the example is used of stem height in pea plants. Tall plants are dominant to dwarf plants, therefore ...


Population Genetics: When Darwin Met Mendel - Crash Course Biology #18

Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by ...

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