✦ LIBER ✦

The chromosomes of clypeaster rosaceus

✍ Scribed by Mary S. Gardiner

Publisher: John Wiley and Sons
Year: 1927
Tongue: English
Weight: 441 KB
Volume: 43
Category: Article
ISSN: 0362-2525
DOI: 10.1002/jmor.1050430210

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✦ Synopsis

Abstract

The diploid number of chromosomes obtained from counts of anaphases of the first somatic mitosis is found to be forty‐four. Of these, seven have terminal, thirty‐seven non‐terminal attachment, giving a distribution of seven rods, thirteen V's, and twenty‐four J's. The number is constant in all the fertilized eggs counted, indicating an XX–XY arrangement of the sex chromosomes.

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