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Cleavage - Development Biology
Cleavage or segmentation is a series of cell divisions of the fertilized .egg through which it is converted into a multicellular structure, called blastula. The main characteristics of cleavage include:
The cell divisions in the somatic cells are mitotic. The daughter cells or blastomeres or cleavage cells are also derived as a result of mitotic divisions of the zygote. We may ask whether there are any differences between mitotic divisions of somatic cells and, of the zygote and the blastomeres derived from it during cleavage.
What are the six criteria used to build a complete evolutionary branch of vertebrates? Dichotomy in each of the six following criteria builds the vertebrate evolutionary branch
Specific Organization The body of all living things, no matter how different in size or appearance, is composed of cells. Viruses are of course an exception. The study of cell
Give detail explanation about Swimming Swimming is an excellent form of exercise. Swimming can improve the posture and circulation. It is a healthy activity. There are certain
what happens in meiosis in prophase 1?
Why do you think it is necessary for physicians to have so many different terms that describe fractures (compound, comminuted, transverse, greenstick, etc.)?
In the following pedigrees, the disorders or traits presented follow simple patterns of Mendelian inheritance. For each trait, determine the most probable mode of inheritance, stat
Q. Distinguish among the terms stimulus, sensation, and perception? A stimulus is an energy source (chemical, light wave, pressure etc.) which activates a receptor cell (specia
Define Placental Transfer of Nutrients? The placenta is n transitory structure developing during pregnancy and lies implanted on the uterine wall. It is connected with the foet
heart beat
Water Pollutants - Water Pollution Water pollution can occur on account of any one or more of the following agents: 1. Biological: Pathogens such as virus, bacteria,
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