{"id":1996,"date":"2020-07-17T08:48:55","date_gmt":"2020-07-17T08:48:55","guid":{"rendered":"https:\/\/murreeroad.org\/Biology10\/?p=1996"},"modified":"2020-07-17T08:48:55","modified_gmt":"2020-07-17T08:48:55","slug":"q-10-derine-and-explain-mendels-law-of-independent-assortment","status":"publish","type":"post","link":"https:\/\/murreeroad.org\/Biology10\/q-10-derine-and-explain-mendels-law-of-independent-assortment\/","title":{"rendered":"Q.10 Derine and Explain Mendel\u2019s Law of Independent Assortment."},"content":{"rendered":"
Q.10\u00a0Derine and Explain Mendel\u2019s Law of Independent Assortment.<\/strong> Q.10\u00a0Derine and Explain Mendel\u2019s Law of Independent Assortment. Answer: Definition Alleles of a gene pair segregate (get separated and distributed to gametes) independently from the alleles of other gene pair. This is called as law of independent assortment. Dihybrid Cross It is a cross in which two contrasting traits are studied at a time. In… Read More »Q.10 Derine and Explain Mendel\u2019s Law of Independent Assortment.<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26],"tags":[],"_links":{"self":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1996"}],"collection":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/comments?post=1996"}],"version-history":[{"count":1,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1996\/revisions"}],"predecessor-version":[{"id":2000,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1996\/revisions\/2000"}],"wp:attachment":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/media?parent=1996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/categories?post=1996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/tags?post=1996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nAnswer:<\/strong>
\nDefinition<\/strong>
\nAlleles of a gene pair segregate (get separated and distributed to gametes) independently from the alleles of other gene pair. This is called as law of independent assortment.
\nDihybrid Cross <\/strong>
\nIt is a cross in which two contrasting traits are studied at a time. In next crosses, Mendel studied dihybrid crosses.
\nTraits <\/strong>
\nTraits under study were as follows:
\nSeed shape <\/strong>
\nIt has two distinct forms:
\n(a) Round
\n(b) Wrinkled
\nSeed Colour <\/strong>
\nIt has also two distinct forms:
\n(a) Yellow
\n(b) Green
\nDominance <\/strong>
\nThe trait of round seed was dominant over wrinkled, similarly yellow seed colour was dominant over green.
\nAlleles controlling traits <\/strong>
\nRound seed shape is controlled by R\u2019 and wrinkled by ‘r’, similarly yellow seed colour is controlled by ‘Y’ and green by \u2018y?
\nP1 Generation <\/strong>
\nMendel crossed the true breeding plant that had Round yellow seeds with true breeding wrinkled green seeds.
\nF1 Generation <\/strong>
\nAll seeds in F1 generation were round yellow.
\n
\nF2 generation <\/strong>
\nWhen FI seeds grow into plants they were self fertilized. This cross produced seeds with four phenotypes. There were 315 round yellow seeds, 108 round green seeds, 101 wrinkled yellow seeds. and 32 wrinkled green seeds.
\nRatio in F2 Generation<\/strong>
\nThe ratio of these phenotypes was 9:3:3:1
\nConclusion <\/strong>
\nMendel explained that two traits i.e., seed shape and seed colour are not tied with each other. The segregation of ‘R’ and ‘r’ alleles happens independently of segregation of ‘Y’ and ‘y’ alleles.
\n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"