Class 12BiologyPrinciples of Inheritance and VariationMix Examples- Principles of Inheritance and Variation
MediumMatch the columns:
Column $I$ Column $II$ $(a)$ Sickle cell anaemia $(p)$ Homogentisic acid $(b)$ Alkaptonuria $(q)$ Lack of Melanin $(c)$ Albinism $(r)$ Accumulation of Amino acid $(d)$ Phenylketonuria $(s)$ Defective haemoglobin
| Column $I$ | Column $II$ |
| $(a)$ Sickle cell anaemia | $(p)$ Homogentisic acid |
| $(b)$ Alkaptonuria | $(q)$ Lack of Melanin |
| $(c)$ Albinism | $(r)$ Accumulation of Amino acid |
| $(d)$ Phenylketonuria | $(s)$ Defective haemoglobin |
(A) $(a-s), (b-p), (c-q), (d-r)$
Explanation:
$1$. Sickle cell anaemia $(a)$ is caused by the production of defective haemoglobin $(s)$ due to a point mutation in the $\beta$-globin gene.
$2$. Alkaptonuria $(b)$ is a metabolic disorder characterized by the accumulation of homogentisic acid $(p)$ in the urine.
$3$. Albinism $(c)$ is a genetic condition resulting in the lack of melanin $(q)$ pigment in skin,hair,and eyes.
$4$. Phenylketonuria $(d)$ is an inborn error of metabolism where the enzyme phenylalanine hydroxylase is deficient,leading to the accumulation of phenylalanine (an amino acid) $(r)$ in the body.
Explanation:
$1$. Sickle cell anaemia $(a)$ is caused by the production of defective haemoglobin $(s)$ due to a point mutation in the $\beta$-globin gene.
$2$. Alkaptonuria $(b)$ is a metabolic disorder characterized by the accumulation of homogentisic acid $(p)$ in the urine.
$3$. Albinism $(c)$ is a genetic condition resulting in the lack of melanin $(q)$ pigment in skin,hair,and eyes.
$4$. Phenylketonuria $(d)$ is an inborn error of metabolism where the enzyme phenylalanine hydroxylase is deficient,leading to the accumulation of phenylalanine (an amino acid) $(r)$ in the body.
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Similar Questions
Match the following (Column-$I$ with Column-$II$):
Column-$I$ Column-$II$ $(P)$ $(2n-1)$ $(i)$ Produces normal female $(Q)$ $Hb^s Hb^s$ $(ii)$ Produces haploid male $(R)$ $22AA+XX$ $(iii)$ Causes Turner syndrome $(S)$ $(X+O)$ $(iv)$ Causes sickle cell anemia $(v)$ Causes hemophilia $(vi)$ Shows Klinefelter syndrome
| Column-$I$ | Column-$II$ |
| $(P)$ $(2n-1)$ | $(i)$ Produces normal female |
| $(Q)$ $Hb^s Hb^s$ | $(ii)$ Produces haploid male |
| $(R)$ $22AA+XX$ | $(iii)$ Causes Turner syndrome |
| $(S)$ $(X+O)$ | $(iv)$ Causes sickle cell anemia |
| $(v)$ Causes hemophilia | |
| $(vi)$ Shows Klinefelter syndrome |
Medium
View SolutionWhich of the following statements is correct?
Which of the following characteristics represent 'Inheritance of blood groups' in humans?
$(a)$ Dominance
$(b)$ Co-dominance
$(c)$ Multiple allele
$(d)$ Incomplete dominance
$(e)$ Polygenic inheritance
$(a)$ Dominance
$(b)$ Co-dominance
$(c)$ Multiple allele
$(d)$ Incomplete dominance
$(e)$ Polygenic inheritance
MediumNEET 2018
View SolutionIn maize, albinism is caused by the effect of:
Medium
View SolutionPick out the correct statements.
$I.$ Haemophilia is a sex-linked recessive disease
$II.$ Down's syndrome is due to aneuploidy
$III.$ Phenylketonuria is an autosomal dominant gene disorder
$IV.$ Phenylketonuria is an autosomal recessive gene disorder
$V.$ Sickle cell anaemia is an $X$-linked recessive gene disorder
$I.$ Haemophilia is a sex-linked recessive disease
$II.$ Down's syndrome is due to aneuploidy
$III.$ Phenylketonuria is an autosomal dominant gene disorder
$IV.$ Phenylketonuria is an autosomal recessive gene disorder
$V.$ Sickle cell anaemia is an $X$-linked recessive gene disorder
Medium
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