How do scientists pronounce a specific gene locus like 6p21.3 ?

Question

In genetics a locus is a fixed position on a chromosome, such as the position of a gene. The chromosomal locus of a gene might be written "6p21.3". Here the 6 is the chromosome number. The letter p indicates that the position is on the chromosome's short arm (example from Wikipedia).

So would a scientist read this out loud as "six P two one dot three" for instance?

Answer 1

:) Actually, you are exactly right, it should pronounced:
six p two one dot three.
p or q indicates the arm, the next number the band, the next the subband, etc. The numbers are not decimal!!! p21 doesn't mean there is p17 or p18, that depends on the given chromosome.
To be honest, in everyday usage, we commonly would say six p twentyone dot three... :)

Answer 2

Sixth locus on p21 point 3 is how this is commonly stated.

Enjoy!