{"id":209057,"date":"2025-04-28T10:20:32","date_gmt":"2025-04-28T10:20:32","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=209057"},"modified":"2025-04-28T10:20:34","modified_gmt":"2025-04-28T10:20:34","slug":"in-pea-plants-purple-flowers-are-dominant-to-white-flower","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/04\/28\/in-pea-plants-purple-flowers-are-dominant-to-white-flower\/","title":{"rendered":"In pea plants, purple flowers are dominant to white flower"},"content":{"rendered":"\n

In pea plants, purple flowers are dominant to white flowers. If two white flowered plants are crossed. What percentage of their offspring will be white flowered? _<\/em><\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

In pea plants, the flower color trait is governed by a simple Mendelian inheritance pattern, where purple flowers (P) are dominant to white flowers (p). When crossing two white-flowered plants, it is important to understand that both must have the genotype pp<\/strong>, as white flowers only appear when both alleles are recessive.<\/p>\n\n\n\n

Step 1: Determine the genotypes of the parents<\/h3>\n\n\n\n

Since white flowers are recessive (p), both parent plants must be homozygous recessive for the flower color gene. Therefore, the genotype of both parent plants is pp<\/strong>.<\/p>\n\n\n\n

Step 2: Perform the Punnett square analysis<\/h3>\n\n\n\n

A Punnett square is used to predict the genetic outcome of a cross. For the cross of two pp<\/strong> parents, the gametes from each parent can only carry the p<\/strong> allele (since both parents are pp<\/strong>). When these gametes combine during fertilization, the possible genotypes for the offspring will be:<\/p>\n\n\n\n

<\/th>p<\/th>p<\/th><\/tr><\/thead>
p<\/td>pp<\/td>pp<\/td><\/tr>
p<\/td>pp<\/td>pp<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Step 3: Analyze the results<\/h3>\n\n\n\n

All offspring will inherit one p<\/strong> allele from each parent, resulting in a genotype of pp<\/strong> for every offspring. Since pp<\/strong> results in white flowers (as the recessive trait is expressed when two recessive alleles are present), 100% of the offspring will have white flowers.<\/p>\n\n\n\n

Conclusion<\/h3>\n\n\n\n

Thus, 100%<\/strong> of the offspring from the cross of two white-flowered pea plants (pp<\/strong> x pp<\/strong>) will also have white flowers. This is because both parents contribute only the recessive allele p<\/strong>, resulting in the genotype pp<\/strong> for all offspring.<\/p>\n\n\n\n

In summary, crossing two homozygous recessive white-flowered pea plants will result in 100% white-flowered offspring.<\/p>\n","protected":false},"excerpt":{"rendered":"

In pea plants, purple flowers are dominant to white flowers. If two white flowered plants are crossed. What percentage of their offspring will be white flowered? _ The correct answer and explanation is : In pea plants, the flower color trait is governed by a simple Mendelian inheritance pattern, where purple flowers (P) are dominant […]<\/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-209057","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/209057","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=209057"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/209057\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=209057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=209057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=209057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}