- published: 06 Nov 2014
- views: 24447
A phenotype (from Greek phainein, meaning "to show", and typos, meaning "type") is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, phenology, behavior, and products of behavior (such as a bird's nest). A phenotype results from the expression of an organism's genes as well as the influence of environmental factors and the interactions between the two. When two or more clearly different phenotypes exist in the same population of a species, the species is called polymorph.
The genotype of an organism is the inherited instructions it carries within its genome.
This genotype-phenotype distinction was proposed by Wilhelm Johannsen in 1911 to make clear the difference between an organism's heredity and what that heredity produces. The distinction is similar to that proposed by August Weismann, who distinguished between germ plasm (heredity) and somatic cells (the body). The genotype-phenotype distinction should not be confused with Francis Crick's central dogma of molecular biology, which is a statement about the directionality of molecular sequential information flowing from DNA to protein, and not the reverse.
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A brief introduction to phenotype and genotype for general biology students at Wood River High School. General Biology A Unit 5: Expressing Yourself.
How can a blue-eyed child come from two brown-eyed parents? Find out in this science music video - researched, written, sung, directed, shot, and edited by 7th and 8th graders from The Nueva School in California. The song is a science-ified version of "No Type" by Rae Sremmurd. The SCIENCE RAP ACADEMY is an elective class where 7th and 8th grade students from the Nueva School meet twice a week to research science, write and record lyrics, then conceptualize, shoot, and edit a music video. The "Phenotype" team includes Pranav, Mavi, Dylan, Ayla, & Beckett. For inquiries, please contact Tom McFadden, teacher of the "Science Rap Academy", at tmcfadden at nuevaschool dot org.
033 - Genotypes and Phenotypes Paul Andersen explains how changes in the genotype of an individual can affect the phenotype. He begins with genotype:phenotype::letters:story analogy. He explains how mutations can be neutral, beneficial or harmful. He also explains how mistakes in the cell cycle can lead to disorder, sterility or new species. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ All of the images are licensed under creative commons and public domain licensing: Air Pollution, n.d. http://openclipart.org/detail/101575/air-pollution-by-netalloy. Allison, Anthony. English: Comparison of the Distribution of Malaria (left) and Sickle-Cell Trait (right)., [object HTMLTableCellElement]. Original work by Anthony Allison. http:...
In this video collaboration from Khan Academy and 23andMe, you'll learn how your observable traits, or phenotypes, are the result of interactions between your genes and environment.
In this video, I show you the difference between Genotypes and Phenotypes. I define them both then show you examples. REMEMBER: Genotypes = What the traits are (both visible trait and second/recessive trait) Phenotypes = What it looks like "walking down the street"
Learn about the difference between genotypes and phenotypes
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I'm just a little black rain cloud
Hovering under the honey tree
I'm only a little black rain cloud
Pay no attention to little me
Oh, everyone knows that a rain cloud
Never eats honey, no, not a nip
I'm just floating around over the ground
Wonderin' where I will drip
Oh, everyone knows that a rain cloud
Never eats honey, no, not a nip
I'm just floating around over the ground