(D) The correct answer is $D$. Sickle cell trait is a heterozygous condition in which an individual possesses one allele for normal haemoglobin $(Hb^A

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(D) The correct answer is $D$. Sickle cell trait is a heterozygous condition in which an individual possesses one allele for normal haemoglobin $(Hb^A)$ and one allele for sickle cell haemoglobin $(Hb^S)$. Individuals with this condition are typically asymptomatic carriers,as they produce enough normal haemoglobin to prevent the severe symptoms associated with sickle cell anaemia.

Class 12 Biology Principles of Inheritance and Variation Mix Examples- Principles of Inheritance and Variation

Medium

$A$ person may have one gene for normal haemoglobin and one gene for sickle cell haemoglobin. This heterozygous condition is called:

A
Genome
B
Anaemia
C
Gene trait
D
Sickle cell trait

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Principles of Inheritance and Variation

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Mix Examples- Principles of Inheritance and Variation

In which one of the following combinations $(a-d)$ of the number of chromosomes is the present day hexaploid wheat correctly represented?

Combination Monosomic,Haploid,Nullisomic,Trisomic

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Milk secretion and beard growth,both the traits are

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$A$ back-cross is a cross between ........

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Differentiate between the following:
$(a)$ Dominant and Recessive
$(b)$ Homozygous and Heterozygous
$(c)$ Monohybrid and Dihybrid.

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Select the wrong pair from the following:

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$A$ person may have one gene for normal haemoglobin and one gene for sickle cell haemoglobin. This heterozygous condition is called:

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In which one of the following combinations $(a-d)$ of the number of chromosomes is the present day hexaploid wheat correctly represented? Combination Monosomic,Haploid,Nullisomic,Trisomic

Milk secretion and beard growth,both the traits are

$A$ back-cross is a cross between ........

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Select the wrong pair from the following:

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In which one of the following combinations $(a-d)$ of the number of chromosomes is the present day hexaploid wheat correctly represented?

Combination Monosomic,Haploid,Nullisomic,Trisomic

Differentiate between the following:
$(a)$ Dominant and Recessive
$(b)$ Homozygous and Heterozygous
$(c)$ Monohybrid and Dihybrid.