If a father and son are both defective in red-green colour vision, is it likely that son inherited t

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4.Principles of Inheritance and Variation

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If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father ? Comment.

Option A

Option B

Option C

Option D

Solution

Gene for colour blindness is$X-$chromosome linked. sons receive their $\mathrm{X}$ from their mother, not from their father. Male-to-male inheritances is not possible for $X$-linked traits in humans. In the given case the mother of the child must be a carrier (heterozygous) for colour blindness gene.

Standard 12

Biology

Give differences : Haemophilia and Sickle-cell Anaemia

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If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?

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(NEET-2013)

A colour blind son will born when

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$A$ : Sickel cell anaemia occurs due to the point mutation.
$R$ : $mRNA$ produced from $Hb(s)$ gene has $GAG$ instead of $GUG$.

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Sickle cell-anaemia disorder arises due to

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If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father ? Comment.

Solution

Similar Questions

Give differences : Haemophilia and Sickle-cell Anaemia

If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?

A colour blind son will born when

$A$ : Sickel cell anaemia occurs due to the point mutation. $R$ : $mRNA$ produced from $Hb(s)$ gene has $GAG$ instead of $GUG$.

Sickle cell-anaemia disorder arises due to

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$A$ : Sickel cell anaemia occurs due to the point mutation.
$R$ : $mRNA$ produced from $Hb(s)$ gene has $GAG$ instead of $GUG$.