Sickle cell-anaemia disorder arises due to

  • A

    Duplication of a segment of $DNA$

  • B

    Substitution in a single base of $DNA$

  • C

    Deletion of a segment of $DNA$

  • D

    Duplication in a base pair of $RNA$

Similar Questions

Which one of the following symbols and its representation, used in human pedigree analysis is correct?

Symptoms representing a particular disease due to chromosomal abnormalities are referred to

In pedigree analysis, symbol given for sex unspecified is

:Match the columns :

Column $I$
 
Column $II$
 
$(1)$ Albinism $(p)$  recessive gene
represented by
HbsHbs.
 
$(2)$ Phenyl 
Ketonuria
$(q)$ recessive gene
represented by cc.
$(3)$ Sickle cell 
anaemia
$(r)$ recessive gene
 represented by aa.
 
$4)$ Alkaptonuria $(s)$ recessive gene
represented by pp

If a colour blind woman marries a normal visioned man, their sons will be

  • [AIPMT 2006]