{"id":213674,"date":"2025-05-12T07:36:46","date_gmt":"2025-05-12T07:36:46","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=213674"},"modified":"2025-05-12T07:39:58","modified_gmt":"2025-05-12T07:39:58","slug":"genetic-variation","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/12\/genetic-variation\/","title":{"rendered":"In a certain population of rabbits, the ratio of the phenotypes of brown fur and white fur is 1:1."},"content":{"rendered":"\n<p>Genetic Variation<\/p>\n\n\n\n<p>Organizing Data About Expressed Traits<\/p>\n\n\n\n<p>rganizing Data About Expressed Traits Quick Check<\/p>\n\n\n\n<p>In a certain population of rabbits, the ratio of the phenotypes of brown fur and white fur is 1:1. ?What is the frequency of the white fur trait in the rabbit population? (1 ?point)<\/p>\n\n\n\n<p>1%<\/p>\n\n\n\n<p>100%<\/p>\n\n\n\n<p>25%<\/p>\n\n\n\n<p>50%<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer: 50%<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>In genetics, a <strong>phenotype<\/strong> refers to the observable characteristics or traits of an organism, such as fur color in rabbits. When organizing data about <strong>expressed traits<\/strong>, especially in a population, we often use <strong>ratios and percentages<\/strong> to describe the frequency of each phenotype.<\/p>\n\n\n\n<p>In this scenario, we are told that the <strong>ratio of brown fur to white fur<\/strong> in a rabbit population is <strong>1:1<\/strong>. This means for every 1 brown-furred rabbit, there is 1 white-furred rabbit.<\/p>\n\n\n\n<p>Let\u2019s break this down numerically:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Suppose there are <strong>2 rabbits<\/strong>: one with brown fur and one with white fur.<\/li>\n\n\n\n<li>The <strong>total number of rabbits<\/strong> is 2.<\/li>\n\n\n\n<li>The number of white-furred rabbits is 1.<\/li>\n<\/ul>\n\n\n\n<p>To calculate the <strong>frequency (or percentage)<\/strong> of rabbits with white fur, we use the formula: Frequency&nbsp;(%)=(Number&nbsp;of&nbsp;white-fur&nbsp;rabbitsTotal&nbsp;number&nbsp;of&nbsp;rabbits)\u00d7100\\text{Frequency (\\%)} = \\left( \\frac{\\text{Number of white-fur rabbits}}{\\text{Total number of rabbits}} \\right) \\times 100 =(12)\u00d7100=50%= \\left( \\frac{1}{2} \\right) \\times 100 = 50\\%<\/p>\n\n\n\n<p>So, <strong>50%<\/strong> of the rabbit population has white fur.<\/p>\n\n\n\n<p>This 1:1 ratio is often seen in simple Mendelian inheritance when both parents are <strong>heterozygous<\/strong> (carrying one dominant and one recessive allele). For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B<\/strong> = dominant allele for brown fur<\/li>\n\n\n\n<li><strong>b<\/strong> = recessive allele for white fur<\/li>\n<\/ul>\n\n\n\n<p>When two <strong>Bb (heterozygous)<\/strong> rabbits are crossed, the offspring have these genotype possibilities:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>25% BB (brown fur)<\/li>\n\n\n\n<li>50% Bb (brown fur)<\/li>\n\n\n\n<li>25% bb (white fur)<\/li>\n<\/ul>\n\n\n\n<p>However, if the ratio of phenotypes is already stated as <strong>1:1<\/strong>, it may also suggest a <strong>test cross<\/strong> between a heterozygous (Bb) and a homozygous recessive (bb) rabbit. This cross would produce:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>50% Bb (brown fur)<\/li>\n\n\n\n<li>50% bb (white fur)<\/li>\n<\/ul>\n\n\n\n<p>Hence, the 1:1 ratio supports that <strong>50% of the rabbits have white fur<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Genetic Variation Organizing Data About Expressed Traits rganizing Data About Expressed Traits Quick Check In a certain population of rabbits, the ratio of the phenotypes of brown fur and white fur is 1:1. ?What is the frequency of the white fur trait in the rabbit population? (1 ?point) 1% 100% 25% 50% The Correct Answer [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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":"","ast-disable-related-posts":"","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":"default","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":[25],"tags":[],"class_list":["post-213674","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/213674","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=213674"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/213674\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=213674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=213674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=213674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}