Students revie the Law of Independent Assortment and Law of Dominance. They practice Punnet squares and predicting genetic outcomes and identify factors that influence heredity.

Students flip a pair of coins to determine what genotype and what phenotype their child have for 29 given traits. They draw a picture of their kid based on their coin flip phenotypes.

Students determine their inherited characteristics from their parents. In this biology lesson, students study the life of Mendel using an interactive website. They differentiate dominant and recessive characteristics.

Genetic traits are described as homozygous or heterozygous based on allele similarity. Homozygosity and heterozygosity are explained in this resource. Includes a chart highlighting their differences and some examples that occur in humans.

Resource provides a discussion of Mendel's law of segregation with a focus on genotype, phenotype, alleles, heterozygous/homozygous, and 2 x 2 Punnett squares.

This lesson will explain that genotypes can be either homozygous or heterozygous. It is 2 of 4 in the series titled "Types of Traits."

This lesson will explain that genotypes can be either homozygous or heterozygous. It is 3 of 4 in the series titled "Types of Traits."

This lesson will explain that genotypes can be either homozygous or heterozygous. It is 4 of 4 in the series titled "Types of Traits."

[Free Registration/Login Required] This flipchart show students how to use a Punnett Square to introduce how homozygous and heterozygous genotypes are inherited and how they determine phenotypes.

Read about phenylketonuria and the tests used to diagnose it in those who might have inherited this recessive trait.

This site from Palomar College provides a good background on exactly what Mendel did. Vocabulary links throughout make this a very good introduction article for genetics.

[Free Registration/Login may be required to access all resource tools.] Natural selection acts on the phenotype (traits or characteristics) of an individual. On the other hand, natural selection does not act on the underlying genotype...

Activity Overview Use the SciTools App to simulate a Punnett square. Make predictions about genetic crosses. Learn about the following concepts; genes, alleles, dominant alleles, recessive alleles, homozygous individuals, heterozygous...

This site, which is provided for by the University of Arizona, gives problems online that correspond to basic Mendelian genetics. Test your knowledge once you've read about Mendel and accessed the links to the various subjects covered in...

This site is provided by the University of Arizona and it gives great information on the subject. Good collection of dihybrid crosses which exemplify the issue of independent assortment. Work these once you think you've mastered th concept.

This site from Palomar College provides an online practice quiz includes history as well as some of the genetics. Includes feedback. A great learning and practice site.

This personal site gives the seven characteristics that Mendel observed and a fairly large background to what Mendel saw and interpreted.

Mendel's second law and how he arrived at it through his experiments. Includes vocabulary and examples.

Good description of Mendel's findings and his second major principle.

A quick, five question multiple-choice quiz assessing complex patterns of human inheritance.

A great lesson that deals with genetic probability and recycling. Students will create a recycled "critter" based on genotype/phenotypes.

This lesson focuses on genetic key terms; it defines them and explains what they do. It provides links to a video and a test.

Complete a hands-on lab simulation of natural selection to learn how it impacts a breeding population. Perform an online laboratory simulation and examine the interplay between natural and sexual selection in a population.

A multiple-choice quiz on genetics terms and concepts.