Development

Body color development and genetic analysis of hybrid transparent crucian carp (Carassius auratus)

W. Xu, Tong, G. X., Geng, L. W., and Jiang, H. F., Body color development and genetic analysis of hybrid transparent crucian carp (Carassius auratus), vol. 14, pp. 4399-4407, 2015.

The aim of this study was to investigate the genetic mechanism of the transparent trait in transparent crucian carp. We observed body color development in transparent crucian carp larvae and analyzed heredity of color in hybrids produced with red crucian carp, ornamental carp, and red purse carp. The results showed that the body color of the newly hatched larvae matured into the adult pattern at approximately 54 days post-hatching.

Differential expression of the MHM region and of sex-determining-related genes during gonadal development in chicken embryos

L. C. Caetano, Gennaro, F. G. O., Coelho, K., Araújo, F. M., Vila, R. A., Araújo, A., A. Bernardo, deMelo, Marcondes, C. R., Lopes, S. M. Chuva de S., and Ramos, E. S., Differential expression of the MHM region and of sex-determining-related genes during gonadal development in chicken embryos, vol. 13, pp. 838-849, 2014.

The chicken (Gallus gallus) embryo has been used as a classic model system for developmental studies because of its easy accessibility for surgical manipulation during embryonic development. Sex determination in birds is chromosomally based (ZZ for males and ZW for females); however, the basic mechanism of sex determination is still unknown. Here, the dynamics of expression of candidate genes implicated in vertebrate sex determination and differentiation were studied during embryonic chicken gonadal development.

Programmed cell death in salivary glands of Drosophila arizonae and Drosophila mulleri

P. Ianella, Azeredo-Oliveira, M. T. V., and Itoyama, M. M., Programmed cell death in salivary glands of Drosophila arizonae and Drosophila mulleri, vol. 7, pp. 476-486, 2008.

Programmed cell death (PCD) in insect metamorphosis assumes a great diversity of morphology and controlling processes that are still not well understood. With the objective of obtaining information about the PCD process, salivary glands of Drosophila arizonae and D. mulleri were studied during larval-pupal development. From the results, it can be concluded that the type of the PCD that occurs in these organs is morphologically typical of apoptosis (formation of apoptotic nuclei, followed by fragmentation into apoptotic bodies).

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