Genetics 101 | National Geographic
What is a genome, and how are traits passed from generation to generation? Learn how pea plants helped launch the study of genetics and how the field of genetics research has evolved over time.
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Genetics 101 | National Geographic
Introduction to Genetics
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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NEET / AIIMS 2018 - Genetics Lecture - 1 (NCERT - 12th) Introduction
This lecture is on:
1. Heredity & Variations
2. Meaning of genetics
3. Pre - mendelian era
4. Who is Mendel?
5. What Mendel did?
6. Reason for Mendel's success
7. Garden pea as experimental material
8. Mendel's bad luck
9. Re-discovery of Mendelism
10. 7 Pair of characters in Pisum
Science : Genetics in hindi | biology for ssc cgl in hindi | mp,psc,ssc,upsc,mppsc mains papers
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EXPLANATION OF GENETICS IN DETAIL.
Genetics - Important Terms
Important terms which are used to study inheritance of characters.
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10 Real People With Genetic Mutations
18 Things You Should Know About Genetics
Gene Screen BC 2011 Participant.
18 Things You Should Know About Genetics is an animated film that presents fundamental background information about genetics, as well as offering some quirky but interesting facts about DNA, genes and genetics. It was created to be an upbeat, fun educational short film to initiate and draw interest to this sometimes daunting and seemingly complex subject matter.
Genetics part 1 introduction to advanced genetics
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Mendelian inheritance was initially derived from the work of Gregor Johann Mendel published in 1865 and 1866 which was re-discovered in 1900. It was initially very controversial. When Mendel's theories were integrated with the Chromosome Theory of Inheritance by Thomas Hunt Morgan in 1915, they became the core of classical genetics.
The laws of inheritance were derived by Gregor Mendel, a nineteenth-century Austrian monk conducting hybridization experiments in garden peas (Pisum sativum). Between 1856 and 1863, he cultivated and tested some 5,000 pea plants. From these experiments, he deduced two generalizations which later became known as Mendel's Principles of Heredity or Mendelian inheritance. He described these principles in a two-part paper, Experiments on Plant Hybridization, that he read to the Natural History Society of Brno on February 8 and March 8, 1865, and which was published in 1866.
Mendel's conclusions were largely ignored. Although they were not completely unknown to biologists of the time, they were not seen as generally applicable, even by Mendel himself, who thought they only applied to certain categories of species or traits. A major block to understanding their significance was the importance attached by 19th-century biologists to the apparent blending of inherited traits in the overall appearance of the progeny, now known to be due to multigene interactions, in contrast to the organ-specific binary characters studied by Mendel. In 1900, however, his work was re-discovered by three European scientists, Hugo de Vries, Carl Correns, and Erich von Tschermak. The exact nature of the re-discovery has been somewhat debated: De Vries published first on the subject, mentioning Mendel in a footnote, while Correns pointed out Mendel's priority after having read De Vries's paper and realizing that he himself did not have priority. De Vries may not have acknowledged truthfully how much of his knowledge of the laws came from his own work, or came only after reading Mendel's paper. Later scholars have accused Von Tschermak of not truly understanding the results at all.
Regardless, the re-discovery made Mendelism an important but controversial theory. Its most vigorous promoter in Europe was William Bateson, who coined the terms genetics and allele to describe many of its tenets. The model of heredity was highly contested by other biologists because it implied that heredity was discontinuous, in opposition to the apparently continuous variation observable for many traits. Many biologists also dismissed the theory because they were not sure it would apply to all species. However, later work by biologists and statisticians such as R. A. Fisher showed that if multiple Mendelian factors were involved in the expression of an individual trait, they could produce the diverse results observed. Thomas Hunt Morgan and his assistants later integrated the theoretical model of Mendel with the chromosome theory of inheritance, in which the chromosomes of cells were thought to hold the actual hereditary material, and created what is now known as classical genetics, which was extremely successful and cemented Mendel's place in history.
Mendel's findings allowed other scientists to predict the expression of traits on the basis of mathematical probabilities. A large contribution to Mendel's success can be traced to his decision to start his crosses only with plants he demonstrated were true-breeding. He also only measured absolute (binary) characteristics, such as color, shape, and position of the offspring, rather than quantitative characteristics. He expressed his results numerically and subjected them to statistical analysis. His method of data analysis and his large sample size gave credibility to his data. He also had the foresight to follow several successive generations (f2, f3) of pea plants and record their variations. Finally, he performed test crosses (back-crossing descendants of the initial hybridization to the initial true-breeding lines) to reveal the presence and proportion of recessive characters. Source of the article published in description is Wikipedia. I am sharing their material. Copyright by original content developers of Wikipedia.
029 - Mendelian Genetics
Paul Andersen explains simple Mendelian genetics. He begins with a brief introduction of Gregor Mendel and his laws of segregation and independent assortment. He then presents a number of simple genetics problems along with their answers. He also explains how advances in genetic knowledge may lead to ethical and privacy concerns.
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File:Alice's Restaurant.jpg. Wikipedia, the Free Encyclopedia, December 18, 2012.
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Madprime. Genetics Diagram: Punnett Square Describing One of Mendel's Crosses, between Parents That Are Heterozygous for the Purple/white Color Alleles., May 5, 2007. Own work.
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Crossing Over (Genetics) Hindi Medium
3 Mendelian Laws of Inheritance - Fundamentals of Genetics (Examrace)
In this lecture you will learn the fundamentals of genetics and three laws of Mendelian inheritance.
1. Law of Dominance
2. Law of Segregation
3. Law of Independent Assortment
The various terminologies like monohybrid cross, dihybrid cross, homologous, heterologous, dominant and recessive are discussed in this video.
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Solving Genetics Problems
Help with basic genetics problems, including the use of the Punnett square and rules of probability to solve monohybrid, dihybrid and even - wait for it - YES, the dreaded trihybrid cross! Unions and intersections, autosomal dominant, autosomal recessive and even X-linked recessive inheritance... plus even some relationship advice on the side. All in one video? You bet!
Ms. Parrott explains basic vocabulary and concepts related to genetics including: DNA, chromosome, gene, allele, wild type, mutant type, dominant, recessive, genotype, phenotype, homozygous, heterozygous, pure bred, hybrid, P, F1, and F2 generations.
How to solve genetics probability problems
This genetics lecture explains How to solve genetics probability problems with simpler and easy tricks and this video also explains when to use addition or multiplication rule to solve probability problems in genetics.
So watch this video lecture to learn how to solve genetics problems with probability and risk calculations using addition and multiplication rule.
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Genetic Engineering Will Change Everything Forever – CRISPR
Designer babies, the end of diseases, genetically modified humans that never age. Outrageous things that used to be science fiction are suddenly becoming reality. The only thing we know for sure is that things will change irreversibly.
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ICSE Class 10 Biology / Fundamentals of Genetics 2- Heredity and Variations
ICSE Class 10 Biology / Fundamentals of Genetics 2- Heredity and Variations.
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USMLE RAPID REVIEW - GENETICS (complete)
This is a High Yield USMLE Rapid Review of Genetics.