Which is not a Mendelian disorder in man?

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Question

(D) Mendelian disorders are primarily determined by alteration or mutation in the single gene. Examples include Haemophilia,Colour blindness,Sickle ce

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Down's syndrome

Vedclass · Answer

(D) Mendelian disorders are primarily determined by alteration or mutation in the single gene. Examples include Haemophilia,Colour blindness,Sickle cell anaemia,Phenylketonuria,Thalassemia,and Cystic fibrosis.Down's syndrome is a chromosomal disorder caused by the presence of an additional copy of chromosome number $21$ (Trisomy of $21$).Therefore,Down's syndrome is not a Mendelian disorder.

Column $I$	Column $II$
$(a)$ Sickle cell anaemia	$(x)$ Homogentisic acid
$(b)$ Alkaptonuria	$(y)$ Melanin pigments are absent
$(c)$ Albinism	$(z)$ More amount of phenylalanine
$(d)$ Phenylketonuria	$(w)$ Defective haemoglobin

Similar Questions

Which of the following is a Mendelian disorder?

Match the columns:

Column $I$ Column $II$

$(a)$ Sickle cell anaemia $(x)$ Homogentisic acid

$(b)$ Alkaptonuria $(y)$ Melanin pigments are absent

$(c)$ Albinism $(z)$ More amount of phenylalanine

$(d)$ Phenylketonuria $(w)$ Defective haemoglobin

If a color-blind woman marries a normal man,their offspring will be:

Which of the following is ineffective against antibiotics?

$A$ boy is colour blind. Among his two sisters,one is colour blind and one is a carrier (normal). Who is colour blind in his family?

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