{"id":8894,"date":"2019-05-22T16:12:40","date_gmt":"2019-05-22T16:12:40","guid":{"rendered":"http:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/r7_and_r8_photoreceptors\/"},"modified":"2019-05-22T16:12:40","modified_gmt":"2019-05-22T16:12:40","slug":"r7_and_r8_photoreceptors","status":"publish","type":"post","link":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/r7_and_r8_photoreceptors\/","title":{"rendered":"R7 and R8 photoreceptors"},"content":{"rendered":"<p>Blue and ultraviolet sensitive classes of photoreceptors in the Drosophila fruit fly compound eye. &nbsp;The eye consists of about 800 units (viz.,&nbsp;<a href=\"https:\/\/www.amentsoc.org\/insects\/glossary\/terms\/ommatidia\" target=\"_self\" data-editable-link=\"https:\/\/www.amentsoc.org\/insects\/glossary\/terms\/ommatidia?target=_self\" rel=\"noopener noreferrer\">ommatidia<\/a>)&nbsp;that in turn are composed of eight neural photoreceptor cells together with twelve non-neural supporting cells (viz., bristle, cone and pigment). &nbsp;R8 is considered to be the &#8216;founder&#8217; cell that specifies the other photoreceptor cells via a network of interacting molecules. &nbsp;Like R7, it is an inner photoreceptor cell while R1-R6 generate dim light-sensitive rhodopsin Rh1. &nbsp;The eye of the fly has provided important insights into developmental signalling processes as well as the specification of neural cell types. &nbsp;&nbsp;<\/p>\n<p>See Boss (or bride of seven less), <a href=\"cones_and_rods\">Cones and rods<\/a>, <a href=\"developmental_genetics\">Developmental genetics<\/a>, <a href=\"ras\">Ras<\/a>, <a href=\"sevenless\">Sevenless<\/a>, <a href=\"tyrosine_kinase_receptor-pathway\">Tyrosine kinase receptor\/pathway<\/a><\/p>\n<p><\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Blue and ultraviolet sensitive classes of photoreceptors in the Drosophila fruit fly compound eye. &nbsp;The eye consists of about 800 units (viz.,&nbsp;ommatidia)&nbsp;that in turn are composed of eight neural photoreceptor cells together with twelve non-neural supporting cells (viz., bristle, cone and pigment). &nbsp;R8 is considered to be the &#8216;founder&#8217; cell that specifies the other photoreceptor &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/r7_and_r8_photoreceptors\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;R7 and R8 photoreceptors&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2],"class_list":["post-8894","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-glossary","entry"],"_links":{"self":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/8894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/comments?post=8894"}],"version-history":[{"count":0,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/8894\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/media?parent=8894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/categories?post=8894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/tags?post=8894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}