Hank and his brother John discuss heredity via the gross example of relative ear wax moistness.

Howcast -Learn the difference between a left hand reading and a right hand reading from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Humans inherit two alleles for each gene, and their interaction determines how traits are expressed—homozygous if both alleles are the same, and heterozygous if they differ. In complete dominance, one allele masks the other; in...

Dominant trait needs only 1 affected allele, whereas recessive trait needs both allele. Normally a dominant trait will be seen in all generations, but a recessive trait may skip generations. We can have X-linked dominant or autosomal...

Summarized tips for Pedigree analysis

Multiple allele traits are controlled by a single gene with more than two allele variants, as seen in the ABO blood group system, which involves the alleles IA, IB, and i. The six possible genotypes result in four blood types, with IA...

The genetic make-up of an individual.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...

A recessive allele is the version of a gene that will only be expressed if two copies are present, one from each set of chromosomes.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

How a 19th century Austrian monk explained the rules of genetic inheritance before anyone even knew genes existed. Biology - Cells And DNA - Learning Points. Before the discovery of genes, Austrian monk Gregor Mendel described three laws...

What is cystic fibrosis? Find out what the symptoms are and how it is caused. Biology - Cells And DNA - Learning Points. Cystic fibrosis is a serious progressive, genetic disease that affects the whole body. Cystic fibrosis is caused by...

If you inherit two copies of every gene, one from each parent, how do your cells know which version to use? Biology - Cells And DNA - Learning Points. Alleles, alternative forms of genes, can be dominant or recessive. Dominant alleles...

Dive into the intricate world of genetic inheritance to understand how dominant and recessive alleles shape our traits, from tongue rolling abilities to eye color. Learn why siblings can inherit different traits from the same parents...

In this video we take a look at the conditions polydactyly and cystic fibrosis, and use genetic diagrams to see how they can be inherited.

This video covers: - The experiment that Mendel did with pea plants, looking at pea colour, flower colour, and height. - How Mendel discovered hereditary units, which could be recessive or dominant - An overview of when chromosomes, and...

To show how inheritance works we can use genetic diagrams and punnet squares. This video explores two examples to demonstrate everything you need know about them!

This video covers: - What family trees are and how they work - How to use keys - The example of cystic fibrosis - How to use family trees to predict the chance of a disease being inherited Exam board specific info: AQA - Everything is...

There are load of terms to know about DNA, and in this video we explain all the main ones - genes, alleles, homozygous and heterozygous, dominant and recessive, genotype and phenotype. Along the way we'll see how genes and inheritance...

Dr. Forrester focuses on explaining Punnett squares, dominant and recessive genes, and simple traits.

Dr. Forrester discusses that we are all unique due to the traits that we inherit. She describes the two different types of genes, which are dominant and recessive, and how these genes are responsible for our unique looks.

In this detailed video, we'll walk you through dihybrid crosses, Punnett squares, and the often-discussed 9:3:3:1 ratio. Get ready to dive deep into the world of genetics! This step-by-step guide to dihybrid crosses using...

A video entitled “What Are Genes?” which introduces the concept of heredity, or the combination of genetic traits.

“Transferring Traits” introduces the concepts of heredity and genetic traits, with a focus on Gregor Mendel’s pioneering work in the field of genetics.

This week on Nature League, Brit Garner explores the life and times of Gregor Mendel, the monk who became the father of modern genetics, with some re-enactment help from her friend Adrian.

Join us as we dive into the fascinating world of genetics, guided by the Father of Genetics himself, Gregor Mendel. We'll explore the laws of heredity Mendel formulated from his groundbreaking experiments with pea plants and learn how...