Zygote to adult

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Differential gene expression and development. The fate of a cell describes what it will become in the course of normal development. The fate of a particular cell can be discovered by labelling that cell and observing what structures it becomes a part of.

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Rice is becoming a model plant in monocotyledons and a model cereal crop. For better understanding of the rice plant, it is essential to elucidate the developmental programs of the life cycle. To date, several attempts have been made in rice to categorize the developmental processes of some organs into substages.

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About Translations. Key Events of Human Development during the first week week 1 following fertilization or clinical gestational age GA week 3based upon the last menstrual period. The first week of human development begins with fertilization of the egg by sperm forming the first cell, the zygote.

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A stem cell is an unspecialized cell that is not terminally differentiated and has the potential to acquire a more specialized function by differentiation. Stem cells may be classified based upon their stage of differentiation or their differentiation lineage. All terminally differentiated cells had their beginning in embryonic stem cell progenitors. The main types of stem cells, based upon their potential to differentiate, are totipotent, pluripotent and multipotent stem cells.

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The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information necessary to form a new individual. In multicellular organisms, the zygote is the earliest developmental stage. In single-celled organisms, the zygote can divide asexually by mitosis to produce identical offspring.

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Human development is the process of growth to maturity. The process begins with fertilizationwhere an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiationand the resulting embryo then implants in the uteruswhere the embryo continues development through a fetal stage until birth.

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Fertilization occurs when a sperm and an egg have fused together to form a zygote, which begins to divide as it moves towards the uterus. In medicine, this process is referred to as fertilization; in lay terms, it is more commonly known as conception. After the point of fertilization the fused product of the female and male gamete is referred to as a zygote or fertilized egg.

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One of a group of extinct, shelled, marine cephalopods related to squids; cephalopods are within the larger group Mollusca, which includes clams and snails. Ammonite shells were generally coiled, though some non-coiled forms did exist. The group went extinct 65 million years ago at the end of the Cretaceous Period.

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A zygote is the union of the sperm cell and the egg cell. Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo.

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