which of the following is an example of directional selection? question 34 options: a) a mouse population that is originally white in color becoming darker in color after several generations b) a flower population that originally ranges from white to red becoming mostly pink over several generations c) a moth population that is originally grey gradually dividing into discrete white and black populations over several generations<\/p>\n\n\n\n
The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n The correct answer is:<\/p>\n\n\n\n A) A mouse population that is originally white in color becoming darker in color after several generations.<\/strong><\/p>\n\n\n\n Explanation:<\/strong><\/p>\n\n\n\n Directional selection is a type of natural selection where one extreme phenotype is favored over other phenotypes, causing the population to shift in a specific direction over time. This often occurs in response to environmental changes that make certain traits more advantageous for survival and reproduction. As a result, individuals with those advantageous traits tend to survive and reproduce more than others, causing that trait to become more common in the population across generations.<\/p>\n\n\n\n Option A, which describes a mouse population that changes from white to darker color over time, exemplifies directional selection. In this case, there could be an environmental reason why a darker coat color provides better camouflage, thus improving the darker mice\u2019s chances of survival against predators. Over time, these darker-colored mice reproduce more successfully, gradually shifting the entire population’s color towards the darker spectrum.<\/p>\n\n\n\n In contrast, Option B<\/strong> describes a scenario where a population moves toward a medium, or intermediate, phenotype\u2014in this case, pink flowers. This is an example of stabilizing selection<\/strong>, where the intermediate trait is favored over the extremes, which stabilizes the population around that intermediate trait.<\/p>\n\n\n\n Option C<\/strong> describes a situation where a population divides into two extreme phenotypes (white and black), which is an example of disruptive selection<\/strong>. Disruptive selection favors both extremes over the intermediate, potentially leading to the formation of two distinct groups within the population that may eventually become separate species.<\/p>\n\n\n\n In summary, Option A best represents directional selection because it involves a shift toward a single trait extreme (darker color), aligning with how directional selection drives populations toward an advantageous trait in a specific direction.<\/p>\n","protected":false},"excerpt":{"rendered":" which of the following is an example of directional selection? question 34 options: a) a mouse population that is originally white in color becoming darker in color after several generations b) a flower population that originally ranges from white to red becoming mostly pink over several generations c) a moth population that is originally grey […]<\/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-166994","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/166994","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=166994"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/166994\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=166994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=166994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=166994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}