Among mammals, modern cetaceans (whales, dolphins, and porpoises) are unusual in the absence of hind limbs. However, cetacean embryos do initiate hind-limb bud development. In dolphins, the bud arrests and degenerates around the fifth gestational week. Initial limb outgrowth in amniotes is maintained by two signaling centers, the apical ectodermal ridge (AER) and the zone of polarizing activity...

Wheat and barley DNA enriched for ribosomal RNA genes was isolated from actinomycin D-CsCl gradients and used to clone the ribosomal repeating units in the plasmid pAC184. All five chimeric plasmids isolated which contained wheat rDNA and eleven of the thirteen which had barley rDNA were stable and included full length ribosomal repeating units. Physical maps of all length variants cloned have ...

The present study was hypothesized to evaluate a set of SSRs for the assessment genetic variations in Asparagus officinalis L. and their allied species. Nine genic SSR markers were especially developed genome employed DNA profiling studies These have revealed allelic polymorphism ranging from 1.0 2.0. Allele frequency found highest psbD-trnL (1.0), petB (1.0) AG7 while it lowest ZHD1 (0.1). Pol...

Th e published fi gure legend is as follows (WRONG): Figures 1–10. Blacometeorus sinicus Chai & Chen, sp. n. ♀, holotype. 1 antenna 2 head, frontal view 3 head, dorsal view 4 mesonotum, dorsal aspect 5 propodeum and metasomal tergite I–II, dorsal aspect 6 fore wing 7 hind wing 8 body, lateral view 9 hind leg 10 hind tarsus. dorsal view 2 head, frontal view 3 antenna 4 body, lateral view 5 hind ...

hemimelia as a congenital anomaly is a failure of development of extremities formation in embryonic period. this anomaly is defined as complete absence of the part of extremities and different forms were explained for hemimelia. adactyly is an alternative name for transverse hemimelia and is a rare disorder in the most of animal species. a two months old male lamb with normal vital signs was re...

Reports on the prevalence of abortion due to Chlamydia psittaci (Chlamydophila abortus) in Kerala have indicated a need for the in depth study of the organism. To unearth differences among the isolates of Chlamydia psittaci, at molecular level, restriction enzyme analysis of genomic DNA and plasmid profiling were carried out. Four isolates from four different sources were used in this study. DN...