. Lecturas en la evolución, la genética y la eugenesia. Evolución; Herencia; la eugenesia. 366 lecturas en la evolución, la genética y la eugenesia grado de variabilidad presente en la especie. Por lo tanto 508 indi- viduals fueron tomadas al azar y su escala o escudo Cantidad contada. Se comprobó que el número total de escamas en las nueve bandas oscilaron entre 517 a 625 y que el número más frecuente fue de alrededor de 557. A fin de obtener una idea clara de la distribución de los diferentes tipos, 130 r. Fig. 62.-^Polígono de variación para el número total de escamas en las nueve bandas del armadillo (Dasypus novemcinctu

• Colaborador/a: Central Historic Books / Alamy Foto de stock
• ID de la imagen: PG1EN4
• Tamaño: 7,2 MB (136,1 KB Descarga comprimida)
• Autorizaciones: Modelo - no | Propiedad - no
• Dimensiones: 1697 x 1473 px | 28,7 x 24,9 cm | 11,3 x 9,8 inches | 150dpi

Más información

Esta imagen es de dominio público, lo cual quiere decir que los derechos de autor han expirado en relación con la imagen o bien el titular ha renunciado a sus derechos de autor. Alamy le cobrará un precio por acceder a una copia de alta resolución de la imagen.

Esta imagen podría tener desperfectos porque se trata de una imagen histórica o de reportaje.

. Readings in evolution, genetics, and eugenics. Evolution; Heredity; Eugenics. 366 READINGS IN EVOLUTION, GENETICS, AND EUGENICS extent of variability present in the species. Consequently 508 indi- viduals were taken at random and their scale or scute number counted. It was found that the total number of scutes in the nine bands ranged from 517 to 625 and that the commonest number was about 557. In order to get a definite idea of the distribution of the different types, 130 r. Fig. 62.—^Polygon of variation for the total number of scutes in the nine bands of the armadillo (Dasypus novemcinctus), as determined by the seriation of 508 individuals. Class range = 8 scutes. The solid line represents the observa- tional, and the broken line the theoretical, normal curve. The abscissae refer to the number of scutes, and the ordinates to the number of individuals. (From Newman.) they were arranged in a variation polygon as shown in Figure 62. On the abscissa are arranged groups including individuals between 517 and 524 scutes inclusive, those between 525 and 532, those between 533 and 540, on up to a group of those from 621 to 625. All of these except the last included a small class with a range of 8 scutes. This arranging in classes was essential, for without it there would have been. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Newman, Horatio Hackett, b. 1875. Chicago : University of Chicago Press