In this informative site, you will find the definition of genotype and phenotype, an explanation of the relationship between genotype and phenotype, an example of a genetic trait, an explanation of the flow of information from DNA to...

[Free Registration/Login may be required to access all resource tools.] Describes genotype and phenotype, and how genes are inherited.

Do you know the difference between population genetics and quantitative genetics? This webpage examines both population genetics which concentrates on frequencies of alleles and genotypes and quantitative genetics which deals with the...

This site talks about the differences between genotype and phenotype. It offers examples, and tells how a genotype determines a phenotype.

[Free Registration/Login may be required to access all resource tools.] Describes genotype and phenotype, and how genes are inherited.

Students learn about patterns of inheritance including genotype and phenotype, and then learn about the inheritance of autosomal dominant and recessive and sex-linked genetic disorders.

Get an in-depth look at gene inheritance and transmission with this webpage. This site explores genetics beyond Mendel and his peas. Investigate transmission genetics with the following topics gene linkage, variation in gene expression,...

Upper level discussion of several of Mendel's experiments and laws.

Using chromosome and gene models, students play the roles of two parents in this genetics simulation. The object is to create four offspring and determine their genotypes and phenotypes, and determine the probability of having offspring...

This site includes a lesson plan designed to teach students how genetic traits are passed down from parents to offspring. Students will explore such concepts as random selection, chrosomes, genotypes and phenotypes using jelly beans and...

[Free Registration/Login may be required to access all resource tools.] Discusses the role of probability in inheritance.

A good site to establish what is meant by gene linkage and sex-linkage.

[Free Registration/Login may be required to access all resource tools.] Describes how to use a Punnett square to predict genotypes and phenotypes.

[Free Registration/Login may be required to access all resource tools.] Describes how to use a Punnett square to predict genotypes and phenotypes.

[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...

For a concise summary of human blood types, this is a great resource. Discussion includes the topics of genotype, phenotype and agglutinins. There is also a nice pictorial table that summarizes the three blood types.

A multiple-choice quiz on genetics terms and concepts.

Through informational text, interactive activities, practice problems, and video clips, students analyze how biological traits are passed on to successive generations.

Why don't you look exactly like your brother or sister? Meiosis involves the reducing of genetic material and chromosome shuffling which results in different genetic combinations. In this activity, students will view a computer model of...

In this plant biology science fair project, students will investigate effects of irradiation on seed germination. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed...

This site explains genetic beliefs before and after Mendel, and also includes a section on Mendel himself and his experiments, entitled, "The Monk and his Peas".

Geniventure engages students in exploring heredity, genetics, and the protein-to-trait relationship by breeding and studying virtual dragons. Students play through six levels of challenges, conducting simulated experiments that generate...

How natural selection works at the level of genes, alleles, genotypes, & phenotypes.

These pages are part of a site called Evolution that accompany a textbook by the same name. Mark Ridley is the author. This section has an advanced discussion of determining allele and genotype frequencies using the Hardy-Weinberg ratio.