Genetic counsellors can identify heterozygous individuals by
Height of individuals
Colour of individuals
Screening procedures
All of these
To store blood some anticoagulant is added. It can be
Barr bodies (seen in saliva test in Olympic games) are found in human and are associated with
Mendel's experimental material was
The defect sickle-cell anaemia is caused by the ______ of glutamic acid by valine at the $6^{th}$ position of the ______ globin chain of the haemoglobin molecule.
Which mutation causes change in allele?