{"id":495,"date":"2023-11-27T19:35:00","date_gmt":"2023-11-27T19:35:00","guid":{"rendered":"https:\/\/cellandcelldivision.com\/?p=495"},"modified":"2024-01-30T23:48:58","modified_gmt":"2024-01-30T23:48:58","slug":"page-71","status":"publish","type":"post","link":"https:\/\/cellandcelldivision.com\/?p=495","title":{"rendered":"Page 71"},"content":{"rendered":"\n

Intermediary Inheritance of the Features <\/h2>\n\n\n\n

The rule of the dominant and recessive inheriting of the features established by
Mendel is not confirmed in all cases of hybridization. Some times the hereditary
features in heterozygotic phenotype (Aa) are displayed in an intermediary fashion.
Such a case was observed in crosses of pure lines of the garden flower plant
snapdragon (Antirrhinum majus). One of the varieties has got red flowers and the
other \u2014 white one. Their crosses have all displayed in F\u2081 a pink colouring of the
flowers. In F\u2082 the ratio of the plants with red, pink and white flowers is 1:2:1 (Fig. 2\u201310).
The observed intermediary inheritance of the features shows that the applicability of
Mendel\u2019s laws do not always account for dominance and recessiveness.<\/p>\n\n\n\n

image<\/p>\n\n\n\n

Figure 2\u201310. Intermediary inheritance of the colour of the \nflowers in Antirrhinum majus. One of the parents is \nhomozygotic for red colouring (AA) and the other \u2013 for white \n(aa). There is no dominance, that is why the flowers of the \nheterozygotic plants (Aa) from F\u2081 have a pink colour. The \noffspring in F\u2082 yields red, pink and white colours in a ratio of 1:2:1. <\/pre>\n\n\n\n
Polyhybrid Crossing<\/strong><\/p>\n\n\n\n
The crosses of plants and animals differing in more than two hereditary
features is called trihybrid<\/strong>, tetrahybrid<\/strong> and polyhybrid<\/strong>. For example the
thiheterozygoticity (AaBbCc) is based on the assumption that the three allelic pairs
are situated in three homologous chromosomes. Their independent
combination leads to the formation of eight types of gametes \u2014 ABC, ABc,
AbC, aBC, Abc, aBc, abC and abc in F\u2081, which will yield in F\u2082 64
combinations each with three hereditary features. In the case of Mendel
they are distributed according to phenotype as follows:<\/p>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
Intermediary Inheritance of the Features The rule of the dominant and recessive inheriting of the features established byMendel is not confirmed in all cases of hybridization. Some times the hereditaryfeatures in heterozygotic phenotype (Aa) are displayed in an intermediary fashion.Such a case was observed in crosses of pure lines of the garden flower plantsnapdragon (Antirrhinum […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-495","post","type-post","status-publish","format-standard","hentry","category-book"],"_links":{"self":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=495"}],"version-history":[{"count":2,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/495\/revisions"}],"predecessor-version":[{"id":507,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/495\/revisions\/507"}],"wp:attachment":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}