{"id":1984,"date":"2020-07-16T10:19:40","date_gmt":"2020-07-16T10:19:40","guid":{"rendered":"https:\/\/murreeroad.org\/Biology10\/?p=1984"},"modified":"2020-07-16T10:20:13","modified_gmt":"2020-07-16T10:20:13","slug":"q-7-what-is-genotype-explain-its-different-types","status":"publish","type":"post","link":"https:\/\/murreeroad.org\/Biology10\/q-7-what-is-genotype-explain-its-different-types\/","title":{"rendered":"Q.7 What is Genotype? Explain its different types."},"content":{"rendered":"

Q.7 What is Genotype? Explain its different types.<\/strong>
\nAnswer:<\/strong>
\nGenotype <\/strong>
\nThe specific combination of genes in an individual is known as the genotype of that individual. It is of two types:
\n(i) Homozygous . (ii) Heterozygous
\n(i) Homozygous Genotype <\/strong>
\nThe genotype in which the gene pair contains two identical alleles (AA or aa) is called as homozygous genotype. ‘
\n(ii) Heterozygous genotype <\/strong>
\nThe genotype in which the gene pair contains two different alleles (Aa) is called as heterozygous genotype.
\nExplanation with example Albinism<\/strong>
\nIt is a condition in which normal body pigments are absent. Like other traits, it is also controlled by one pair of genes.
\nRecessive trait<\/strong>
\nAlbinism is recessive trait i.e., it is produced when both recessive alleles are present in an organism
\nAlleles for a trait<\/strong>
\nTwo alleles for a gene pair are represented’ as ‘A’ and ‘a’. Allele \u2018A\u2019 produces normal body pigments while allele ‘a’ does not produce pigments.
\nThree combinations<\/strong>
\nThree combinations i.e. genotypes are possible for these two al\u021beles.
\n(i) AA\u00a0 \u00a0 \u00a0 (ii) Aa\u00a0 \u00a0 \u00a0 (iii) aa
\nDominant allele<\/strong>
\nIn heterozygous condition one allele masks or prevents the expression of other. It is called as dominant allele and it is represented by capital letter.
\nRecessive allele<\/strong>
\nIn heterozygous condition, one allele is not expressed, it is called as recessive allele. It is always represented by lower case letters.
\nGenotype AA or Aa<\/strong>
\nIf genotype is ‘AA’ or ‘Aa’, the individual will produce pigments.
\nGenotype aa<\/strong>
\nIf genotype is ‘aa’, no pigments will be produced and individual will be albino,
\nConclusion<\/strong>
\nSo it is concluded that allele ‘A’ dominates allele ‘a’ because in ‘Aa’ individual pigments are produced and the effect of a’ is suppressed by ‘A’.
\nPhenotype<\/strong>
\nThe expression of genotype in the form of trait (in albinism, being albino or having normal pigmentation) is known as phenotype.
\n\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Q.7 What is Genotype? Explain its different types. Answer: Genotype The specific combination of genes in an individual is known as the genotype of that individual. It is of two types: (i) Homozygous . (ii) Heterozygous (i) Homozygous Genotype The genotype in which the gene pair contains two identical alleles (AA or aa) is called… Read More »Q.7 What is Genotype? Explain its different types.<\/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\/1984"}],"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=1984"}],"version-history":[{"count":1,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1984\/revisions"}],"predecessor-version":[{"id":1985,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1984\/revisions\/1985"}],"wp:attachment":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/media?parent=1984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/categories?post=1984"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/tags?post=1984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}