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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.
State the Definition of respiration Respiration is an act of breathing. (i.e. rise and fall of the chest). Respiration hastwo parts i.e. inhalation and exhalation. When we bre
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State the differences between the male gametes and the female gametes with regard to (a) their size; (b) their structure, (c) their relative numbers. (a
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Cryopreseravtion of gametes , embryos or DNA segments can be quite an effective and safe approach for breeds or strains whose populations are too small to be conserved by any other
in what form is most carbohydrates is taken in normal diet
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Cytoplasmic inclusions are cytoplasmic molecular aggregates, like as pigments, organic polymers and crystals. They are not considered cell organelles. Fat drops and glycogen gra
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