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How Mendel's pea plants helped us understand genetics - Hortensia Jiménez Díaz

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View full lesson: http://ed.ted.com/lessons/how-mendel-s-pea-plants-helped-us-understand-genetics-hortensia-jimenez-diaz Each father and mother pass down traits to their children, who inherit combinations of their dominant or recessive alleles. But how do we know so much about genetics today? Hortensia Jiménez Díaz explains how studying pea plants revealed why you may have blue eyes.

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This HD dramatic video choreographed to powerful music introduces the viewer/student to the science of Genetics and Inheritance. It is designed as a motivational "trailer" to be shown in classrooms by Biology teachers in middle school, high school and college as a visual Introduction to the history and science of Genetics, Heredity and Biotechnology.

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Genetic variation is brought about, fundamentally, by mutation, which is a permanent change in the chemical structure of chromosomes.

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the gene theory are the main concept that traits are passed on from parent to offspring through gene transmission.

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genes are DNA that are made up of 2 long strands.

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some human only have 18 chromosomes which allows them to have down syndrome .

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incomplete dominance is an inheritance in which 1 allele is not completely expressed over its paired allele.

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some genetics can be expressed my the environment, which effects the organisms metabolism , and hormones .

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most genes are associate with sex linked traits, that is carried by a male or female .

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genetics have multiple alleles that can occupy the same locus.

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Individuals share as much as 99.9 % of the same genetic material & differ in only 1%.

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co - dominance arises when both alleles in a heterozygous organism are dominant & fully expressed in the phenotype.