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Fertilization - Development Biology
Previously you knew the process which leads to the differentiation of the male and female germ cells, the sperm and ova, respectively. In this section we shall describe the process by which the sperm and the egg unite to form a zygote. This process is known as fertilization. Fertilization results in
Activation would essentially mean that a sequence of metabolic and morphological changes are triggered that in turn cause the division of a unicellular zygote into a multicellular organism. Mostly we will describe the fertilization in mammals with occasional references to sea urchins. It is true that depending upon the habitat as well as the life styles there may be variations in the fertilization process in diverse organisms. But generally the events of fertilization are more or less similar in many different organisms. Prior to the actual fusion of the sperm and the egg nuclei, the germ cells prepare themselves for the fertilization process.
Mineralisation and Humification As a result of physical weathering, the rocks are broken down into smaller particles. But this is not the true soil, and plants cannot grow well
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Chromosomes and Their Organization During division phase , the duplicated chromatin fibres become extremely shortened (= condensed), by coiling and folding ,into short
Define Swollen and Tender Joints and haemorrhage in various Tissues? Haemorrhages occur deep in muscle, particularly in calf, thigh, buttocks and forearm, causing pain in surro
Describe three mechanisms cells use to produce diversity of ion channel structure and function.
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