<p>The current ensembl entry doesn't have a 29 either.  The archived ensembl assembly  lacks 29 30, and 31 and 33 and LGE64.</p>

<p>The chromosomes after 30 are tiny, so they might not be visible in a karyotype.  They probably realized that "chr 29" was really attached to some other chromosome.</p>

CC BY-SA 4.0
2018-05-04T18:59:16.517Z
2018-05-04T18:59:16.517Z
swbarnes2
<p>The chromosome sizes at UCSC don't seem to contain chr29:</p>

<p><a href="ftp://hgdownload.soe.ucsc.edu/goldenPath/galGal5/bigZips/galGal5.chrom.sizes" rel="nofollow noreferrer">ftp://hgdownload.soe.ucsc.edu/goldenPath/galGal5/bigZips/galGal5.chrom.sizes</a></p>

<p>It has a chr28 and a chr30. Am I missing something or is there some piece of history that led to the omission of this chromosome?</p>

<genome><assembly><reference-genome><ucsc>
Does the galGal5 chicken assembly have a chromosome 29?
# Does the galGal5 chicken assembly have a chromosome 29?

(Asked by: username_0 on 2018-05-04)

The chromosome sizes at UCSC don't seem to contain chr29:

<ftp://hgdownload.soe.ucsc.edu/goldenPath/galGal5/bigZips/galGal5.chrom.sizes>

It has a chr28 and a chr30. Am I missing something or is there some piece of history that led to the omission of this chromosome?

**Tags:** genome, assembly, reference-genome, ucsc

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## 1 answers

### Answer by username_1 on 2018-05-04. Score: 2 | Accepted answer

The current ensembl entry doesn't have a 29 either. The archived ensembl assembly lacks 29 30, and 31 and 33 and LGE64.

The chromosomes after 30 are tiny, so they might not be visible in a karyotype. They probably realized that "chr 29" was really attached to some other chromosome.


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