If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
- [NEET 2013]
- A
$0.25$
- B
$1$
- C
No chance
- D
$0.5$
Similar Questions
A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. Thus boy
A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. Thus boy
- [AIPMT 2005]
If a man who is colour blind marries a women, who is pure normal for colour vision, the chances of their sons have colour blindness is
If a man who is colour blind marries a women, who is pure normal for colour vision, the chances of their sons have colour blindness is
Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?
Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?
- [AIPMT 2012]
:Match the columns :
Column $I$
Column $II$
$(a)$ Sickle cell anaemia
$(x)$ Homogentisic acid
$(b)$ Alkaptonuria
$(y)$ Melanin pigmentsare absent
$(c)$ Albinism
$(z)$ More amount of phenyl alanine
$(d)$ Phenyl Ketonuria
$(w)$ Defective haemoglobin
:Match the columns :
| Column $I$ |
Column $II$ |
| $(a)$ Sickle cell anaemia | $(x)$ Homogentisic acid |
| $(b)$ Alkaptonuria | $(y)$ Melanin pigmentsare absent |
| $(c)$ Albinism | $(z)$ More amount of phenyl alanine |
| $(d)$ Phenyl Ketonuria | $(w)$ Defective haemoglobin |
Colour blindness results from
Colour blindness results from