Linear Differentiation of the C-band Pattern of the W Chromosome in Snakes and Birds

Overview

Journal Chromosoma

Specialty Molecular Biology

Date 1981 Jan 1

PMID 7273948

Citations 9

Authors

G A Mengden

Affiliations

Soon will be listed here.

Abstract

Evidence is presented from C-banding studies that the W chromosome of eleven species of snakes is not homogeneous in nature but is differentiated linearly into alternating lighter and darker C positive regions. The same is true of the W chromosome of at least some birds. There is evidence from the literature indicating a similar differentiation of the Y chromosome of some mammals and here the intermediate C positive regions are deficient in highly repetitive DNA. The significance of heterochromatinization as a means of generating differentiated sex chromosomes is discussed in the light of these findings.

Citing Articles

Impact of Repetitive DNA Elements on Snake Genome Biology and Evolution.

Ahmad S, Singchat W, Panthum T, Srikulnath K Cells. 2021; 10(7).

PMID: 34359877 PMC: 8303610. DOI: 10.3390/cells10071707.

Partial Amniote Sex Chromosomal Linkage Homologies Shared on Snake W Sex Chromosomes Support the Ancestral Super-Sex Chromosome Evolution in Amniotes.

Singchat W, Ahmad S, Sillapaprayoon S, Muangmai N, Duengkae P, Peyachoknagul S Front Genet. 2020; 11:948.

PMID: 33014016 PMC: 7461878. DOI: 10.3389/fgene.2020.00948.

Evolutionary Dynamics of the W Chromosome in Caenophidian Snakes.

Augstenova B, Mazzoleni S, Kratochvil L, Rovatsos M Genes (Basel). 2017; 9(1).

PMID: 29283388 PMC: 5793158. DOI: 10.3390/genes9010005.

Sex chromosome evolution in snakes inferred from divergence patterns of two gametologous genes and chromosome distribution of sex chromosome-linked repetitive sequences.

Matsubara K, Nishida C, Matsuda Y, Kumazawa Y Zoological Lett. 2016; 2(1):19.

PMID: 27570632 PMC: 5002183. DOI: 10.1186/s40851-016-0056-1.

Amplification of microsatellite repeat motifs is associated with the evolutionary differentiation and heterochromatinization of sex chromosomes in Sauropsida.

Matsubara K, OMeally D, Azad B, Georges A, Sarre S, Marshall Graves J Chromosoma. 2015; 125(1):111-23.

PMID: 26194100 DOI: 10.1007/s00412-015-0531-z.

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