Lesson: Alleles Biology

In this lesson, we will learn how to define and explain the key terms in genetics and explain how alleles provide genetic variation in humans.

Lesson Plan

Students will be able to

define the terms chromosome, gene, and allele,
explain what is meant by dominant and recessive alleles,
understand that some alleles, such as those that control blood groups in humans, can be codominant,
recognize when alleles for a gene are homozygous or heterozygous,
understand that a genotype is all the genes of an organism, and the interaction of these genes is expressed in the phenotype.