Colour blindness is

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Question

(A) Colour blindness is a genetic disorder characterized by the inability to distinguish between certain colours,most commonly red and green.$(i)$ It

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Sex-linked recessive disease

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(A) Colour blindness is a genetic disorder characterized by the inability to distinguish between certain colours,most commonly red and green.$(i)$ It is a sex-linked recessive disorder.$(ii)$ It results from a defect in either red or green cone cells of the eye,leading to a failure to discriminate between red and green colours.$(iii)$ The gene responsible for colour blindness is located on the $X$-chromosome.$(iv)$ It is observed more frequently in males $(X^{c}Y)$ because they possess only one $X$-chromosome,whereas females $(XX)$ require two copies of the recessive gene to express the trait.

Column $I$	Column $II$
$(1)$ Albinism	$(q)$ Recessive gene represented by $cc$
$(2)$ Phenylketonuria	$(s)$ Recessive gene represented by $pp$
$(3)$ Sickle cell anaemia	$(p)$ Recessive gene represented by $Hb^sHb^s$
$(4)$ Alkaptonuria	$(r)$ Recessive gene represented by $aa$

Similar Questions

Match the columns:

Column $I$ Column $II$

$(1)$ Albinism $(q)$ Recessive gene represented by $cc$

$(2)$ Phenylketonuria $(s)$ Recessive gene represented by $pp$

$(3)$ Sickle cell anaemia $(p)$ Recessive gene represented by $Hb^sHb^s$

$(4)$ Alkaptonuria $(r)$ Recessive gene represented by $aa$

Examples of congenital diseases are

$A$ normal-visioned woman, whose father is colour-blind, marries a normal-visioned man. What would be the probability of her sons and daughters being colour-blind? Explain with the help of a pedigree chart.

If a color-blind man marries a woman who is homozygous normal for this trait,what will be the genotype of their children?

In sickle-cell anaemia,which of the following amino acids is substituted?

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