(C) $1$. Observe the pedigree: Unaffected parents produce affected offspring (both male and female).$2$. Since unaffected parents have affected childr

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(C) $1$. Observe the pedigree: Unaffected parents produce affected offspring (both male and female).$2$. Since unaffected parents have affected children,the trait must be recessive.$3$. If it were $X$-linked recessive,an affected daughter would require an affected father,which is not the case here.$4$. Therefore,the trait is autosomal recessive,as it skips generations and appears in both sexes equally.

Class 12 Biology Principles of Inheritance and Variation Pedigree Analysis and Mendelian disorders

Medium

Identify the given pedigree analysis.

A
$X$-linked recessive disorder
B
Autosomal dominant disorder
C
Autosomal recessive disorder
D
$X$-linked dominant disorder

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Class 12 Questions

Class 12

Biology Questions

Chapter

Principles of Inheritance and Variation

Subtopic

Pedigree Analysis and Mendelian disorders

$A$ colour-blind man marries the daughter of a colour-blind person. Then in their progeny:

MediumAIIMS 1983

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The following pedigree shows the presence of albinism,which is an autosomal recessive trait. If individual $4$ is homozygous dominant,who will be the carriers for the trait?

Medium

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$A$ man known to be a victim of haemophilia marries a normal woman whose father was known to be a bleeder. Then it is expected that:

MediumAIIMS 1985

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$A$ - Sickle-cell anaemia is a sex-linked recessive trait.
$R$ - This disease is controlled by more than two pairs of alleles.

Medium

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Which of the following conditions,although harmful,provides resistance against infectious diseases spread by mosquitoes?

MediumAIPMT 2003

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Identify the given pedigree analysis.

Similar Questions

$A$ colour-blind man marries the daughter of a colour-blind person. Then in their progeny:

The following pedigree shows the presence of albinism,which is an autosomal recessive trait. If individual $4$ is homozygous dominant,who will be the carriers for the trait?

$A$ man known to be a victim of haemophilia marries a normal woman whose father was known to be a bleeder. Then it is expected that:

$A$ - Sickle-cell anaemia is a sex-linked recessive trait.$R$ - This disease is controlled by more than two pairs of alleles.

Which of the following conditions,although harmful,provides resistance against infectious diseases spread by mosquitoes?

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$A$ - Sickle-cell anaemia is a sex-linked recessive trait.
$R$ - This disease is controlled by more than two pairs of alleles.