Abstract Phenotypic plasticity is an important mechanism that allows populations to adjust changing environments. Early life experiences can have lasting impacts on how individuals respond environmental variation later in (i.e., individual reaction norms), altering the capacity for selection. Here, we incubated lizard embryos ( Lampropholis delicata ) at two fluctuating developmental temperatur...

Background: Decreasing the growth and developmental rate of embryo and arresting in certain step of development like two cell block could be the reason of infertility in some couples referring to fertility and infertility center. The aim of this study is the effect of strontium on growth and development of two-cell arrested NMRI mouse embryo. Materials and Methods: The female mice were coupled ...

Background Selecting the best embryo for transfer, with the highest chance of achieving a vital pregnancy, is a major goal in current in vitro fertilization (IVF) technology. The high rate of embryonic developmental arrest during IVF treatment is one of the limitations in achieving this goal. Chromosomal abnormalities are possibly linked with chromosomal arrest and selection against abnormal fe...