{"id":1573,"date":"2023-02-27T12:57:45","date_gmt":"2023-02-27T07:27:45","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=1573"},"modified":"2025-05-22T17:15:19","modified_gmt":"2025-05-22T11:45:19","slug":"1-1-terms-used-in-genetics","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2023\/02\/27\/1-1-terms-used-in-genetics\/","title":{"rendered":"1.1 Terms used in Genetics"},"content":{"rendered":"\n

Alleles<\/strong><\/em> Alleles are the pair of genes controlling a pair of Contrasting characters.<\/p>\n\n\n\n

Multiple Alleles:<\/em><\/strong> If a gene undergoes mutation . it can exist more than two or more forms are called Multiple Alleles.<\/p>\n\n\n\n

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[Information gathered from various sources on Internet, purely for Learning purpose<\/em>]<\/p>\n\n\n\n

Phenotype:<\/em><\/strong> (Tall x Dwarf)<\/em><\/p>\n\n\n\n

It is the total external expressions or Appearence of an rganism for a Particular character. Irrespective of its Geneotype.<\/p>\n\n\n\n

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PHENOTYPE and GENOTYPE<\/strong> Source: https:\/\/www.gsiccharter.com\/cms\/lib\/GA01933819\/Centricity\/Domain\/209\/Ch%205%20Genetics%20notes.pdf<\/em><\/figcaption><\/figure>\n\n\n\n

Genotype:<\/em><\/strong> (TT x tt)<\/em><\/p>\n\n\n\n

It is the Genetic constitution of an organism for a Particular Character. or Which is responsible for Phenotypic Expression.<\/p>\n\n\n\n

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[GENOTYPE]<\/em><\/strong> Image Source: WIkipedia<\/em><\/figcaption><\/figure>\n\n\n\n

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Homozygous Condition-<\/strong><\/em> (Tallness TT)<\/em> Organism having two simillar genes for a Particular Character on Homologous Chromosomes.<\/p>\n\n\n\n

Heterozygous Condition<\/em><\/strong>–(Tallness Tt)<\/em> Organism having two Dissimilar genes for a Particular Character on Homologous Chromosomes.<\/p>\n\n\n\n

Dominant Gene<\/em><\/strong> The Gene which expresses its Character in the Hybrid is called Dominant Gene.<\/p>\n\n\n\n

Recessive Gene:<\/em><\/strong> The Gene which fails to express its Character in the Hybrid is called Recessive Gene.<\/p>\n\n\n\n

PureLine:<\/em><\/strong> The individual with homozygous traits obtained due to continues self breeding over 3 to 4 Generations.<\/p>\n\n\n\n

Hybrid: <\/em><\/strong>It is an offspring obtained when a cross between the 2 Parents which are differ in one or two Character.<\/p>\n\n\n\n

Monohybrid:<\/em><\/strong> It is a cross between two parents which differ in one Character.<\/p>\n\n\n\n

Dihybrid:<\/em><\/strong> it is a cross between two parents which differ in two characters.<\/p>\n\n\n\n

Checkerboard or Punnet Square:<\/em><\/strong> it is a schematic table used to determin the various combinations of Genotype and Phenotypes<\/em> of offsprings in a cross. The Genotypes<\/em> of F1<\/em> and F2<\/em> are Schematically represented is called Checkerboard.<\/p>\n\n\n\n

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Punnet Square <\/em><\/strong>Image Source Wiki<\/em><\/figcaption><\/figure>\n\n\n\n

Allelomorphs:<\/em><\/strong> The Genes controlling Height in Pea plants has two Contrasting forms.Namely , Genes for Tallness T <\/span><\/em>and Genes for Dwarfness t <\/em><\/span>, these two genes constitute the Alleles and Occupy the Same Locus on the Homologous Chromosomes.<\/p>\n\n\n\n

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Alleles Alleles are the pair of genes controlling a pair of Contrasting characters. Multiple Alleles: If a gene undergoes mutation . it can exist more than two or more forms are called Multiple Alleles. [Information gathered from various sources on Internet, purely for Learning purpose] Phenotype: (Tall x Dwarf) It is the total external expressions…<\/p>\n","protected":false},"author":1,"featured_media":1575,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[552],"tags":[371,370,350,377,372,376,374,373,375,345],"class_list":["post-1573","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-academics","tag-define-genetics","tag-definition","tag-genes","tag-genetics-background","tag-genetics-basics","tag-genetics-biology","tag-genetics-biology-notes","tag-genetics-book","tag-genetics-chart","tag-mendal"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t