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What is the branch of science that is devoted to understanding how plants and animals arise from single cells?
What is the branch of science that is devoted to understanding how plants and animals arise from single cells?
What is the term for the process where male and female gametes fuse to form a fertilized egg?
What is the term for the process where male and female gametes fuse to form a fertilized egg?
In which region of the embryo do cells divide more slowly due to the presence of yolk?
In which region of the embryo do cells divide more slowly due to the presence of yolk?
What is the name given to the ball or sheet of similar cells formed during cleavage divisions?
What is the name given to the ball or sheet of similar cells formed during cleavage divisions?
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What is the term for the process where cells divide rapidly and involve no growth, resulting in daughter cells half the size of the mother cell?
What is the term for the process where cells divide rapidly and involve no growth, resulting in daughter cells half the size of the mother cell?
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What is the process that converts the original cell mass into a three-layered structure?
What is the process that converts the original cell mass into a three-layered structure?
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Which layer gives rise to the outer layer of the body's organs?
Which layer gives rise to the outer layer of the body's organs?
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What process is responsible for the formation of extraembryonic structures for support and nutrition?
What process is responsible for the formation of extraembryonic structures for support and nutrition?
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Which science studies the effects of environmental agents on embryos?
Which science studies the effects of environmental agents on embryos?
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What is the process involving the formation of gametes in sexual reproduction?
What is the process involving the formation of gametes in sexual reproduction?
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What is the name given to the liquid-filled cavity in the center of the ball-shaped blastocyst?
What is the name given to the liquid-filled cavity in the center of the ball-shaped blastocyst?
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Which region of the embryo contains the most yolk and results in slower cell division?
Which region of the embryo contains the most yolk and results in slower cell division?
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What term refers to the branch of science devoted to understanding how plants and animals arise from single cells?
What term refers to the branch of science devoted to understanding how plants and animals arise from single cells?
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Which process involves the conversion of a single cell, the fertilized egg, into a complex organism consisting of many anatomical parts?
Which process involves the conversion of a single cell, the fertilized egg, into a complex organism consisting of many anatomical parts?
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During which process do male and female gametes fuse to form a fertilized egg?
During which process do male and female gametes fuse to form a fertilized egg?
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What is the name given to the process that converts the original cell mass into a three-layered structure?
What is the name given to the process that converts the original cell mass into a three-layered structure?
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Which type of cells are formed from germ cells in the embryo?
Which type of cells are formed from germ cells in the embryo?
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What is the significance of the germ line in sexual reproduction?
What is the significance of the germ line in sexual reproduction?
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Which process involves the formation of haploid (1n) chromosome set from germ cells in the embryo?
Which process involves the formation of haploid (1n) chromosome set from germ cells in the embryo?
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What is the developmental process that follows gastrulation and involves the formation of body organs?
What is the developmental process that follows gastrulation and involves the formation of body organs?
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Study Notes
Developmental Biology
- The branch of science focused on the development of plants and animals from single cells is known as developmental biology.
- Fertilization is the process where male and female gametes fuse to create a fertilized egg.
Embryonic Development Stages
- In embryos, the region containing most yolk is called the vegetal pole, where cell division occurs more slowly.
- A blastula is formed during cleavage divisions; it is a ball or sheet of similar cells.
Cell Division Processes
- Cleavage involves rapid cell division without growth, resulting in daughter cells that are half the size of the original cell.
- The process that transforms the initial cell mass into a trilaminar structure is known as gastrulation.
Germ Layers and Their Functions
- The ectoderm is the outermost germ layer, which gives rise to the outer layer of the body's organs and tissues.
- After gastrulation, the organogenesis phase begins, where body organs are formed.
Extraembryonic Structures
- The trophoblast formation is responsible for creating extraembryonic structures, supporting and nourishing the developing embryo.
Environmental Impact on Embryos
- Teratology is the science that examines the effects of environmental agents on embryonic development.
Gamete Formation
- Gametogenesis is the process involved in the formation of gametes during sexual reproduction.
Blastocyst Structure
- The blastocoel refers to the liquid-filled cavity in the center of the blastocyst.
Germ Cell Significance
- Germ cells originate from the germ line and are crucial for sexual reproduction, as they give rise to gametes.
- The haploid (1n) chromosome set is formed from germ cells, reducing the chromosome number in gametes.
Post-Gastrulation Development
- Following gastrulation, the process of organogenesis continues, leading to the development of various body systems and organs.
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Description
Explore the captivating world of developmental biology and embryonic development, unraveling the mystery of how single cells evolve into intricate organisms. Delve into the process of meiosis in male and female gametes, unraveling the halving of chromosome number and genetic diversity.
