gene copy numbers in an genome

Question

[Dattatray Mongad]

Where can I find gene copy numbers of each gene found in the genome?

If any way to extract information from reliable databases?

[natasha.sernova]

There were some posts about that:

Count Gene Copy Numbers In Whole Genome Sequence

Gene copy number analysis from genome sequences

Copy number variation in different species

This article looks helpful:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4330915/

Some database is mentioned here:

http://www.gene-quantification.de/cnv.html

and here: https://gene.sfari.org/