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Medical video background with a DNA strand on a blue grid (Loop).
DNA 018: Medical video background with an animated DNA strand on a blue grid (Loop).
Getty Images
Animated DNA strand on a gray background (Loop).
DNA 017: Animated DNA strand on a gray background (Loop).
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Close up footage of a person writing SYNDROME on an old typewriter, with sound
Close up footage of a person writing SYNDROME on an old typewriter, with sound...
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Futuristic Science Research as a Art Looping Concept
Futuristic Science Research as a Art Looping Concept
Getty Images
Close up footage of a person writing SYNDROME on an old typewriter, with sound
Close up footage of a person writing SYNDROME on an old typewriter, with sound...
Getty Images
Telomerase enzyme.
Telomerase (blue) is an enzyme that adds telomeres, repeat units of six DNA bases, to the ends of chromosomes. It uses an RNA template (red backbone) to assemble repeated units of the DNA bases TTAGGG, where T is thymine (yellow), A is...
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."