Consider the following human disorders: i. He | vedclass

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(D) Mendelian disorders are primarily determined by alteration or mutation in a single gene.$i$. Hemophilia is a sex-linked recessive Mendelian disord

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$i, iii$ and $iv$

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(D) Mendelian disorders are primarily determined by alteration or mutation in a single gene.$i$. Hemophilia is a sex-linked recessive Mendelian disorder.$ii$. Down's syndrome is a chromosomal disorder caused by the presence of an additional copy of chromosome number $21$ (trisomy).$iii$. Cystic fibrosis is an autosomal recessive Mendelian disorder.$iv$. Color blindness is a sex-linked recessive Mendelian disorder.$v$. Night blindness is typically caused by Vitamin $A$ deficiency,not a genetic disorder.Therefore,the Mendelian disorders are Hemophilia $(i)$,Cystic fibrosis $(iii)$,and Color blindness $(iv)$.

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 $aa$

Consider the following human disorders: $i$. Hemophilia,$ii$. Down's syndrome,$iii$. Cystic fibrosis,$iv$. Color blindness,$v$. Night blindness. Which of these represent Mendelian disorders?

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$A$ color-blind daughter is born only when:

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 $aa$

$A$ colour blind man marries a female with homozygous normal vision. What will be the possibility of colour blindness in their male children?

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