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Red green colourblindness is a sex linke...

Red green colourblindness is a sex linked trait. Which of the given statements is not correct regarding colourblindness ?

A

It is more common in males than in females

B

Homozygous recessive condition is required for the expression of colourblindness in females.

C

Males can be carriers of the trait

D

Colourblind women always have colourblind father and always produce colorblined son.

Text Solution

Verified by Experts

The correct Answer is:
C
Since colourblindness is a sex-linked recessive trait and males just have one X chromosome, they can never be the carriers. Males will always express the disease/phenotype.
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Knowledge Check

  • Which of the given statements is NOT CORRECT regarding colour blindness ?

    A
    It is more common in mates than in females.
    B
    Homozygous recessive condition is required for the expression of colour blindness in females.
    C
    Males can be carriers of the trait.
    D
    Colour blind women always have a colourblind father and always produce a colour blind son.

  • Which of the following statements is correct for colourblindness ?

    A
    It is due to mutation in certain genes present on y chromosome.
    B
    It occurs more in females as compared to male.
    C
    The son of the carrier woman has 50 % chances be being colour blind.
    D
    It is autosomal linked genetic disorder.

  • Which statement is correct regarding neuron.

    A
    Neuron is composed of 4 parts containing cell body dendrite, axon & telodendria
    B
    Nissel's granules are found in both cell body & axon.
    C
    Impulse are divided into apolar, bipolar & multipolar
    D
    Dendrites transmit impulse toward the body while axon transmit impulse away from the body.

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