Polyembryony is the phenomenon of the development of more than one embryo in one ovule, seed or fertilized ovum. This usually seen in both animals as well as plants. Most striking situations of polyembryony are being detected in certain animals e.g. parasitic Hymenoptera, where up to 2,000 embryos can spring from one zygote. this … Read more
Pollination, transfer of spore grains from the stamens, the flower elements that manufacture them, to the ovule-bearing organs or to the ovules (seed precursors) themselves. In plants like conifers and cycads, within which the ovules are exposed, the spore is solely caught in an exceedingly drop of fluid secreted by the ovule. In flowering … Read more
This is the collective process that involves the events from the deposition of pollen on the stigma until the pollen tube enters the ovule or merely the dynamic process that requires pollen recognition followed by inhibition. The pistil can recognize the right compatible pollen from the same species and reject pollen grains that are … Read more
Pneumonia is the inflammation of the air spaces most commonly caused by infections. Viruses, bacteria or fungi can cause the infection. They are also few types of pneumonia that are caused by aspirating or inhaling foreign matter or toxic substances in the lungs. Some pneumonia cases are life threatening with more than 50,000 people … Read more
Starting from definition, pleiotropy is seen as a situation in which one gene controls for the expression of multiple phenotypic traits. These traits do not have to be clearly linked, i.e., eye color and eye shape, but can rather be completely unrelated. In many situations, this multi-trait impact is because of a gene code … Read more
Starting from definition, pleiotropy is seen as a situation in which one gene controls for the expression of multiple phenotypic traits. These traits do not have to be clearly linked, i.e., eye color and eye shape, but can rather be completely unrelated. In many situations, this multi-trait impact is because of a gene code … Read more
Viewing plant breeding from the agricultural perspective, it makes use of principles from a variety of sciences to improve the genetic potential of plants. And this particular process involves combining parental plants to reproduce the next generation with the best characteristics. Breeders are improving plants by choosing those with the greatest potential based on … Read more
Introduction Patterns do exist at various scales in time and space. Patterns range from population abundances through ecosystems, communities, biomes, and the whole biosphere. Ecology is still ambivalent about pattern-seeking regardless of the many years of research, which is a curious fact in itself. Ecological scientists are yet to collect significant data about patterns … Read more
Studies have shown reasons for vary in biodiversity pattern across the globe. Biodiversity is not evenly distributed, and it varies greatly across the universe as well as within regions. other factors are, the diversity of all living things “biota” depends on soil, temperature, altitude, appreciation, geography and the presence of other species. And the … Read more
Parturition means childbirth. Childbirth is the culmination of pregnancy, during which a baby grows inside a woman’s uterus. Childbirth is also called labor. Pregnant women go into labor mostly after nine months of conception. Dilation The first stage of parturition begins when the labor starts. It continues until the cervix is fully dilated. This … Read more