A developmental study of constitutive heterochromatin in Microtus agrestis

Chromosoma ◽  
1971 ◽  
Vol 32 (3) ◽  
Author(s):  
J.C. Lee ◽  
JorgeJ. Yunis
Keyword(s):  
Constitutive Heterochromatin ◽  
Microtus Agrestis ◽  
Developmental Study

Fluorescence of constitutive heterochromatin of Microtus agrestis

1972 ◽  
Vol 73 (1) ◽  
pp. 248-252 ◽  
Author(s):  
Asit B. Mukherjee ◽  
H.M. Nitowsky
Keyword(s):  
Constitutive Heterochromatin ◽  
Microtus Agrestis

CHROMOSOMES AND DNA OF MICROTUS II. CONFIRMATION OF DELETION OF CONSTITUTIVE HETEROCHROMATIN IN M. AGRESTIS CELLS IN VITRO

1977 ◽  
Vol 19 (3) ◽  
pp. 537-541 ◽  
Author(s):  
J. E. K. Cooper
Keyword(s):  
Somatic Cell ◽  
Cell Line ◽  
Cell Lines ◽  
X Chromosome ◽  
Sex Chromosomes ◽  
Constitutive Heterochromatin ◽  
The Other ◽  
Microtus Agrestis ◽  
C Banding

The distribution of constitutive heterochromatin has been examined by C-banding in two somatic cell lines, grown in vitro, from a female Microtus agrestis. One line retains one intact X chromosome together with the short arm of the other X chromosome, while the other cell line retains only the short arm of one X chromosome. Thus, each cell line has lost substantial amounts of heterochromatin from the sex chromosomes, but this material has been deleted from the cells, and not translocated to other chromosomes. Nonetheless, both cell lines continue to propagate well in vitro.

Cytological variations in the constitutive heterochromatin of Microtus agrestis

Chromosoma ◽  
1971 ◽  
Vol 35 (2) ◽  
pp. 117-124 ◽  
Author(s):  
J. C. Lee ◽  
Jorge J. Yunis
Keyword(s):  
Constitutive Heterochromatin ◽  
Microtus Agrestis

A Developmental Study of Intonation Recognition

1968 ◽  
Vol 11 (4) ◽  
pp. 825-832 ◽  
Author(s):  
Marilyn M. Corlew
Keyword(s):  
Significant Interaction ◽  
Multiple Choice ◽  
Semantic Content ◽  
First Grade ◽  
Choice Test ◽  
Developmental Study ◽  
Multiple Choice Test ◽  
The Third ◽  
Matching Test ◽  
Better Than

Two experiments investigated the information conveyed by intonation from speaker to listener. A multiple-choice test was devised to test the ability of 48 adults to recognize and label intonation when it was separated from all other meaning. Nine intonation contours whose labels were most agreed upon by adults were each matched with two English sentences (one with appropriate and one with inappropriate intonation and semantic content) to make a matching-test for children. The matching-test was tape-recorded and given to children in the first, third, and fifth grades (32 subjects in each grade). The first-grade children matched the intonations with significantly greater agreement than chance; but they agreed upon significantly fewer sentences than either the third or fifth graders. Some intonation contours were matched with significantly greater frequency than others. The performance of the girls was better than that of the boys on an impatient question and a simple command which indicates that there was a significant interaction between sex and intonation.

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