(B) Colour blindness is an $X$-linked recessive disorder.Let the genotype of a normal-visioned man be $XY$ and a colourblind woman be $X^c X^c$.When t

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Colourblind sons and carrier daughters

(B) Colour blindness is an $X$-linked recessive disorder.Let the genotype of a normal-visioned man be $XY$ and a colourblind woman be $X^c X^c$.When these two individuals mate,the cross is as follows:$P: X^c X^c$ (colourblind woman) $\times XY$ (normal man)Gametes: $X^c$ and $X^c$ from the mother; $X$ and $Y$ from the father.$F_1$ generation:- $X^c X$: Carrier daughter- $X^c Y$: Colourblind sonThus,all sons will be colourblind and all daughters will be carriers.

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

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$A$ marriage between a normal-visioned man and a colourblind woman will produce which of the following types of offspring?

A
Normal sons and carrier daughters
B
Colourblind sons and carrier daughters
C
Colourblind sons and $50\%$ carrier daughters
D
$50\%$ colourblind sons and $50\%$ carrier daughters

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Class 12 Questions

Class 12

Biology Questions

Chapter

Principles of Inheritance and Variation

Subtopic

Pedigree Analysis and Mendelian disorders

Pick out the correct statements.
$(1)$ Haemophilia is a sex-linked recessive disease.
$(2)$ Down's syndrome is due to aneuploidy.
$(3)$ Phenylketonuria is an autosomal recessive gene disorder.
$(4)$ Sickle cell anaemia is an $X$-linked recessive gene disorder.

MediumNEET 2016

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With respect to phenylketonuria,identify which statement is not correct.

EasyKCET 2015

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Find the $ODD$ one out,with respect to $X$-linkage.

EasyMHT CET 2015

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Match Column-$I$ with Column-$II$ and select the correct option.

Column-$I$ Column-$II$

$(P)$ Haemophilia $(i)$ Recessive gene: $X^{h}X^{h}$

$(Q)$ Colour blindness $(ii)$ Recessive gene: $pp$

$(R)$ Phenylketonuria $(iii)$ Recessive gene: $Hb^{s}Hb^{s}$

$(S)$ Sickle-cell anaemia $(iv)$ Recessive gene: $X^{c}X^{c}$

Column-$I$	Column-$II$
$(P)$ Haemophilia	$(i)$ Recessive gene: $X^{h}X^{h}$
$(Q)$ Colour blindness	$(ii)$ Recessive gene: $pp$
$(R)$ Phenylketonuria	$(iii)$ Recessive gene: $Hb^{s}Hb^{s}$
$(S)$ Sickle-cell anaemia	$(iv)$ Recessive gene: $X^{c}X^{c}$

Medium

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Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino (in $\%$)?

MediumAIPMT 1998

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$A$ marriage between a normal-visioned man and a colourblind woman will produce which of the following types of offspring?

Similar Questions

Pick out the correct statements.$(1)$ Haemophilia is a sex-linked recessive disease.$(2)$ Down's syndrome is due to aneuploidy.$(3)$ Phenylketonuria is an autosomal recessive gene disorder.$(4)$ Sickle cell anaemia is an $X$-linked recessive gene disorder.

With respect to phenylketonuria,identify which statement is not correct.

Find the $ODD$ one out,with respect to $X$-linkage.

Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino (in $\%$)?

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Exam Paper Generator

Online Exam Module

Pick out the correct statements.
$(1)$ Haemophilia is a sex-linked recessive disease.
$(2)$ Down's syndrome is due to aneuploidy.
$(3)$ Phenylketonuria is an autosomal recessive gene disorder.
$(4)$ Sickle cell anaemia is an $X$-linked recessive gene disorder.