Khan Academy
Khan Academy: Alleles and Genes
Learn about the gene as a stretch of DNA on a chromosome. Also find out about alleles as versions or sequence variants of a gene. [8:17]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Dna: Human Chromosomes
Human chromosomes explained in this brief description of human cell biology. [0:47]
Khan Academy
Khan Academy: Biology: Mitosis, Meiosis and Sexual Reproduction
An overview of sexual reproduction and how mitosis and meiosis occur to form a particular species. [18:23]
Khan Academy
Khan Academy: Biology: Introduction to Heredity
An introduction to heredity. Understand important terms in genetics like dominant and recessive traits, and heterozygous and homozygous genotypes. [17:27]
Khan Academy
Khan Academy: Biology: Sex Linked Traits
An explanation of gender determination. [14:19]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Dna: Dna Packaging
This narrated animation allows the learner to understand how six feet of DNA can be tightly packed to fit inside the nucleus of every human cell. [1:43]
Amoeba Sisters
Amoeba Sisters: Mutations
In this video students will learn that a mutation is a change in the genetic structure through deletion, insertion, or duplication. They will also learn the significance of the gene and chromosome mutations. Teachers can visit Amoeba...
Khan Academy
Khan Academy: Alleles and Genes
A gene as a stretch of DNA on a chromosome. Alleles as versions (sequence variants) of a gene. [8:18]
Khan Academy
Khan Academy: Reproduction and Cell Division: Chromosomal Crossover in Meiosis I
Learn how homologous chromosomes exchange fragments in prophase I, tetrads, chiasmata, and alleles. [12:15]
Sophia Learning
Sophia: General Mitosis Overview: Lesson 3
This lesson will explain how the process of Mitosis can be used to duplicate chromosomes. It is 3 of 3 in the series titled "General Mitosis Overview."
Sophia Learning
Sophia: Structure of Chromosomes: Lesson 3
This lesson will examine the structure and function of a chromosome. It is 3 of 5 in the series titled "Structure of Chromosomes."
Sophia Learning
Sophia: Changes in Chromosome Number: Lesson 2
This lesson will explore what types of events can change the number of chromosomes an individual has and the physical outcomes of having an abnormal number of chromosomes. It is 2 of 5 in the series titled "Changes in Chromosome Number."
Sophia Learning
Sophia: Changes in Chromosome Number: Lesson 3
This lesson will explore what types of events can change the number of chromosomes an individual has and the physical outcomes of having an abnormal number of chromosomes. It is 3 of 5 in the series titled "Changes in Chromosome Number."
Sophia Learning
Sophia: Changes to Chromosome Structure: Lesson 2
This lesson will identify how the structure of a chromosome can change and the implications that come from changes in chromosomes. It is 2 of 5 in the series titled "Changes to Chromosome Structure."