{"id":101602,"date":"2026-05-03T15:22:32","date_gmt":"2026-05-03T09:52:32","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=101602"},"modified":"2026-05-04T17:19:32","modified_gmt":"2026-05-04T11:49:32","slug":"allele","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/allele\/","title":{"rendered":"Allele"},"content":{"rendered":"<h2><b>Allele Latest News<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">A study from South Africa finds that while protective HLA-B alleles once aided survival and reduced HIV transmission before Antiretroviral therapy, widespread ART use has significantly slowed this natural selection-driven genetic shift. <\/span><\/p>\n<h2><b>About Allele<\/b><\/h2>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">An allele is a <\/span><b>variant form of a gene.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><b>Some genes<\/b><span style=\"font-weight: 400;\"> have a variety of <\/span><b>different forms<\/b><span style=\"font-weight: 400;\">, which are <\/span><b>located at the same position,<\/b><span style=\"font-weight: 400;\"> or<\/span><b> genetic locus, on a chromosome.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><b>Humans <\/b><span style=\"font-weight: 400;\">are called <\/span><b>diploid organisms<\/b><span style=\"font-weight: 400;\"> because they have <\/span><b>two alleles at each genetic locus<\/b><span style=\"font-weight: 400;\">, with <\/span><b>one <\/b><span style=\"font-weight: 400;\">allele inherited<\/span><b> from each parent.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><b>Each pair <\/b><span style=\"font-weight: 400;\">of alleles<\/span><b> represents <\/b><span style=\"font-weight: 400;\">the <\/span><b>genotype of a specific gene.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><b>Genotypes <\/b><span style=\"font-weight: 400;\">are described as <\/span><b>homozygous<\/b><span style=\"font-weight: 400;\"> if there are<\/span><b> two identical alleles<\/b><span style=\"font-weight: 400;\"> at a particular locus and as <\/span><b>heterozygous <\/b><span style=\"font-weight: 400;\">if the <\/span><b>two alleles differ.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><b>Alleles contribute <\/b><span style=\"font-weight: 400;\">to the<\/span><b> organism&#8217;s phenotype<\/b><span style=\"font-weight: 400;\">, which is the<\/span><b> outward appearance<\/b><span style=\"font-weight: 400;\"> of the organism.\u00a0<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Some <\/span><b>alleles are dominant or recessive<\/b><span style=\"font-weight: 400;\">. <\/span><b>When an organism<\/b><span style=\"font-weight: 400;\"> is heterozygous at a specific locus and<\/span><b> carries one dominant and one recessive allele,<\/b><span style=\"font-weight: 400;\"> the organism will <\/span><b>express the dominant phenotype.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This genetic diversity<\/span><b> allows offspring to inherit traits from both parents while exhibiting unique characteristics.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">For example, in hair color, dark hair is typically dominant over light hair; a child may inherit light hair only if both parents pass on the recessive allele.\u00a0<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">All <\/span><b>genetic traits <\/b><span style=\"font-weight: 400;\">are the <\/span><b>result of the interactions of alleles.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><b>Mutation, crossing over, and environmental conditions <\/b><span style=\"font-weight: 400;\">selectively <\/span><b>change the frequency of phenotypes (and thus their alleles)<\/b><span style=\"font-weight: 400;\"> within a population. <\/span><\/li>\n<\/ul>\n<p><strong>Source: <a href=\"https:\/\/epaper.thehindu.com\/ccidist-ws\/th\/th_delhi\/issues\/183102\/OPS\/GI0FU9MH3.1+GITFUAUPG.1.html\" target=\"_blank\" rel=\"nofollow noopener\">TH<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Allele is a variant of a gene at a specific locus that influences traits and genetic diversity. Read about its types, dominance, genotype, and its role in inheritance and evolution.<\/p>\n","protected":false},"author":23,"featured_media":101735,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[7331,21,23],"class_list":{"0":"post-101602","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-allele","9":"tag-prelims-pointers","10":"tag-upsc-prelims-current-affairs","11":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/101602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=101602"}],"version-history":[{"count":6,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/101602\/revisions"}],"predecessor-version":[{"id":101799,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/101602\/revisions\/101799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/101735"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=101602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=101602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=101602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}