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Types of Blindness, Causes, and Their Treatment - Healthline
Medical News Today has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
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Types of blindness: Partial, total, congenital, and more
Revel in the Rainbow: Color-Blindness-Correcting Glasses Debut at Wooden Shoe Festival Portland Monthly
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Revel in the Rainbow: Color-Blindness-Correcting Glasses Debut at Wooden Shoe Festival - Portland Monthly
International collaborations helping understand the physical activity levels and well-being of children with visual impairment Murdoch University
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International collaborations helping understand the physical activity levels and well-being of children with visual impairment - Murdoch University
Nine out of ten cases of blindness caused by glaucoma could be prevented through annual check-ups Euro Weekly News
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Nine out of ten cases of blindness caused by glaucoma could be prevented through annual check-ups - Euro Weekly News
Partial blindness hasn't stopped Oklahoma State's Stailee Heard from leading the Cowgirls into NCAAs The Washington Post
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Partial blindness hasn't stopped Oklahoma State's Stailee Heard from leading the Cowgirls into NCAAs - The Washington Post
Partial blindness hasn't stopped Oklahoma State's Stailee Heard from leading the Cowgirls into NCAAs Eagle-Tribune
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Partial blindness hasn't stopped Oklahoma State's Stailee Heard from leading the Cowgirls into NCAAs - Eagle-Tribune
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Rosie O'Donnell Celebrates Her 63rd Birthday After Move to Ireland as She Slams 'Willful Blindness' in Trump Administration - AOL
The silent sight thief: The devastating effects of glaucoma on mental health and quality of life News24
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The silent sight thief: The devastating effects of glaucoma on mental health and quality of life - News24
Opinion | Should There Be Limits to Research on Human Embryos? The New York Times
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Opinion | Should There Be Limits to Research on Human Embryos? - The New York Times
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Tyson Brown, National Geographic Society
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Sarah Appleton, National Geographic Society, National Geographic Society
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October 19, 2023
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Genetics - National Geographic Society
Genetics is the branch of biology that deals with the study of heredity and its biological process. It also involves the study of genes, genomes and the cell cycle.
Genetics is termed as the study to understand the functioning of inheritance of traits from parents to offspring. The groundwork on which heredity stands is known as inheritance. It is defined as the procedure by which characteristics are handed down from one generation to the other. Gregor Johann Mendel is known as the Father of Modern Genetics for his discoveries on the basic principles of heredity.
Variation, as the name suggests is the amount of dissimilarity that exists between children and their parentages. It can be determined to keep in view the behaviouristic, cytological, physiological, and morphological characters of individuals fitting into similar species.
Some of the major reasons that variation are
Let us have a detailed look at genetics notes to learn about genes and the principle of inheritance.
Garden Pea (Pisum Sativum) was the plant that Mendel experimented on for 7 years to get to the point to propose the laws of inheritance in live creatures. Mendel carefully chose seven distinct characteristics of Pisum Sativum for the investigation concerning hybridization. Mendel used true-breeding lines i.e. those that go through constant self-pollination and display steady characteristic inheritance.
Also Read:Mendels Laws of Inheritance
When Mendel observed the monohybrid cross he proposed two laws of inheritance-
Law of Dominance Distinct elements termed as factors control the characteristics. These factors at all times exist as a couple. One of the constituent genes of the couple dominates over the former.
Law of Segregation Alleles dont blend and the two characteristics are recuperated all through the gamete formation (in the F2 generation). The characters are apart from each other and pass on to diverse gametes. Comparable types of gametes are produced by Homozygous and Heterozygous produces diverse sorts of a gamete with varied characteristics.
Also Refer:Principles of Heredity
Incomplete Dominance
It is the discovery that was done after Mendels work. Incomplete dominance is the situation in which both the alleles do not display a dominant trait resulting in a fine combination or a midway amid the characteristics of the alleles.
Explore more:Incomplete dominance
Codominance
When two alleles lack the dominant-recessive association and thus the duo affects the creature together.
Law of Independent Assortment
The separation of one set of characteristics is autonomous of the other set of characters when they are pooled in a hybrid.
The Chromosomal Theory of Inheritance
Both genes and chromosomes exist in sets of two. The homologous chromosome contains the two alleles of a gene pair in the homologous sites. The coupling and split of a set of chromosomes will cause a split in the set of genes (factor) they carry. This united knowledge is termed the Chromosomal Theory of Inheritance.
Sex Determination
A particular nuclear arrangement was perceived by Henking. He perceived that this particular nuclear arrangement was found in only fifty per cent of sperms. He termed this body as x. Later, it was observed that the ova which only obtained the X chromosome matured and were born as females and those that didnt receive only X chromosomes were born as males. Thus, the X- chromosome was termed a sex chromosome and the remaining ones were termed autosomes.
The occurrence due to which a modification in DNA happens and causes a variation in the phenotype and genotype of a creature is termed a Mutation.
Explore more:Determination Of Sex
Genetic Disorders
Disorders of a Mendelian nature include:
Disorders of a chromosomal nature include:
Explore more:Chromosomal Abnormalities
Learn more in detail about Genetics, its importance, applications and other related topics at BYJUS Biology
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Genetics: Introduction, law of inheritance and Sex Determination - BYJU'S
As a geneticist, I will not mourn 23andMe and its jumble of useless health information | Adam Rutherford The Guardian
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As a geneticist, I will not mourn 23andMe and its jumble of useless health information | Adam Rutherford - The Guardian
Genetics, ecology and evolution of phage satellites Nature.com
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Genetics, ecology and evolution of phage satellites - Nature.com
A genetic tree as a movie: Moving beyond the still portrait of ancestry Phys.org
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A genetic tree as a movie: Moving beyond the still portrait of ancestry - Phys.org
With 23andMe filing for bankruptcy, what happens to consumers genetic data? The Conversation Indonesia
Rare loss-of-function variants in HECTD2 and AKAP11 confer risk of bipolar disorder Nature.com
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Rare loss-of-function variants in HECTD2 and AKAP11 confer risk of bipolar disorder - Nature.com
Horses Pulled Off a Genetic Trick Only Viruses Were Thought to Use SciTechDaily
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Horses Pulled Off a Genetic Trick Only Viruses Were Thought to Use - SciTechDaily
23andMe is looking to sell customers genetic data. Heres how to delete it CNN
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23andMe is looking to sell customers genetic data. Heres how to delete it - CNN