Results 31 to 40 of about 292,497 (164)

Progress in studies of sex determination mechanisms and sex control techniques in Cynoglossus semilaevis (half-smooth tongue sole) [PDF]

Frontiers of Agricultural Science and Engineering, 2016
The Cynoglossus semilaevis (half-smooth tongue sole) is a marine flatfish of great commercial value for fisheries and aquaculture in China. It has a female heterogametic sex determination system (ZW/ZZ) and environmental factors can induce sex-reversal ...
Qian ZHOU,Songlin CHEN
doaj   +1 more source

Sex determination and maintenance: the role of DMRT1 and FOXL2

Asian Journal of Andrology, 2017
In many species, including mammals, sex determination is genetically based. The sex chromosomes that individuals carry determine sex identity. Although the genetic base of phenotypic sex is determined at the moment of fertilization, the development of ...
Shengsong Huang, Leping Ye, Haolin Chen
doaj   +1 more source

Molt patterns and age and sex determination criteria for selected landbirds in an urban area of the Peruvian Central Coast

Caldasia, 2021
Despite molting is an important and expensive activity in the life cycle of birds, this process is poorly known for neotropical species and even less so for species inhabiting urban zones.
Alexis Díaz, Pamela Ayala, Elizabeth Valdiviezo, Jorge Mendoza, Kathia Silva, Rolf Rivas, Dayanne Cornelio, Fabiola Guardia, Yaquelin Tenorio, Rocío Calsina, Lorena Alvariño, José Iannacone   +11 more
doaj   +1 more source

Evaluation of Radiomorphometric Indices of Panoramic Images of Mandible to Estimate Gender and Approximate Age [PDF]

Journal of Mashhad Dental School
Background: The evaluation of radiomorphometric indices of the mandible can aid dentists not only in forensic investigations but also in diagnosing developmental abnormalities, age-related changes, and gender-specific characteristics that are crucial for
Seyed Hosein Razavi, Ali Drafshi, Fatemeh Ezoddini, Khalil Sarikhani, Mohammad Khodabakhsh   +4 more
doaj   +1 more source

Preference on prenatal sex determination and its associated factors among currently married women of reproductive age group in Puducherry, India

Nigerian Postgraduate Medical Journal, 2021
Background: Sex determination refers to knowing the sex of foetus during prenatal period for non-medical reasons. Attitude of married women to sex determination is important to improve the sex ratio at birth.
Ganesh Kumar Saya, Kariyarath Cheriyath Premarajan, Gautam Roy, Sonali Sarkar, Sitanshu Sekhar Kar, Yuvaraj Krishnamoorthy, Jeby Jose Olickal, Revathi Ulaganeethi   +7 more
doaj   +1 more source

Inspiration of Sex Regulation in Teleosts on Sex Reversal of Zig-zag Eel (Mastacembelus armatus)

Guangdong nongye kexue
Influenced by two mechanisms of genetic sex determination and environmental sex determination, the sex control of fish is of great significance for aquaculture.
Xiaowen XUE, Baoyue LU, Chong HAN, Hu SHU   +3 more
doaj   +1 more source

Plant sex determination and sex chromosomes [PDF]

Heredity, 2002
Sex determination systems in plants have evolved many times from hermaphroditic ancestors (including monoecious plants with separate male and female flowers on the same individual), and sex chromosome systems have arisen several times in flowering plant evolution.
openaire   +2 more sources

Homology in Sex Determination in Two Distant Spiny Frogs, Nanorana quadranus and Quasipaa yei

Animals
Sex determination is remarkably diverse, with frequent transitions between sex chromosomes, in amphibians. Under these transitions, some chromosomes are more likely to be recurrently co-opted as sex chromosomes, as they are often observed across deeply ...
Yu Xiao, Guangjiong Liao, Wei Luo, Yun Xia, Xiaomao Zeng   +4 more
doaj   +1 more source

Differences in Homomorphic Sex Chromosomes Are Associated with Population Divergence in Sex Determination in Carinascincus ocellatus (Scincidae: Lygosominae)

Cells, 2021
Sex determination directs development as male or female in sexually reproducing organisms. Evolutionary transitions in sex determination have occurred frequently, suggesting simple mechanisms behind the transitions, yet their detail remains elusive. Here
Peta Hill, Foyez Shams, Christopher P. Burridge, Erik Wapstra, Tariq Ezaz   +4 more
doaj   +1 more source

Differentiation of Dmrt1 Z and W Homologs Occurred Independently in Two Gekko hokouensis Populations

Biomolecules
Gekko hokouensis is a gecko species widely distributed across East Asia. Although most of the Japanese populations possess ZW sex chromosomes (female heterogamety), the degree of sex chromosome differentiation varies among populations.
Momoka Senga, Nao Kaneko, Yoichi Matsuda, Kazumi Matsubara   +3 more
doaj   +1 more source