Q: Describe the three major parts of a spermatozoon and state what organelles or cytoskeletal…
A: Sperm: it's the male gamete created by the male gonad referred to as testis. The sperm cell…
Q: What are the two types of embryonic folding?
A: In embryonic folding, the flat trilaminar disk turns into a lot of round shape embryos due to the…
Q: At which stage of development does XCI initially occur?
A: In many species, genes located on the sex chromosome determined the sex of an individual. In…
Q: What are the mainsubstances transferred fromthe mother to the fetusthrough the placenta? Andfrom the…
A: The placenta is the connecting link between the fetus and the other. It is generally found in the…
Q: What is the differencebetween amnion and chorion?
A: Both amnion and chorion are present during a woman’s pregnancy and are part of the extra embryonic…
Q: What is yolk? What is its role in fertilization and development?
A: The development of organisms depends on the supply of resources. In embryo development nutrition of…
Q: How is the yolk sac formed?What is the function of theyolk sac?
A: Yolk sac is the membranous sac attached to the embryo. It is also known as umbilical vesicle.
Q: Where does fertilizationusually occur, and what hormonal changeshappen after fertilization?
A: Fusion of sperm with ovum is known as fertilisation Fertilisation generally occurs in fallopian tube…
Q: How does the oocyte nucleus move during oogenesis?
A: Oogenesis: Otherwise called as ovogenesis. This is a process that happens during the embryonic…
Q: How do the amount and distribution of yolk influence gastrulation?
A: Gastrulation is a process in which the single layer of cells called blastula is arranged into a…
Q: What is the cell divisionduring the first stage of theembryonic developmentcalled? How is this…
A: The process by which a parent cell divides into two identical daughter cells, is called Cell…
Q: What are the development phenomenas occurs at the age after 11 years?
A: Humans have extremely long development stages compared to other animals due to the complex nature of…
Q: What are embryonic stem (ES) cells ?
A: Stem cells are cells that are undifferentiated or "blank." This ensures they have the potential to…
Q: What is the relationbetween fecundation and theend of the meiotic processduring oogenesis?
A: Gametogenesis is the process of production of gametes i.e. sperm and egg through meiosis. During…
Q: What is the differencebetween double closedcirculation and simple closedcirculation?
A: Circulatory system is one of the most important physiological system of the body that helps in the…
Q: What are the cells surrounding the oocyte? Are they germ-line or somatic in origin?
A: Gametogenesis is the process of production of gametes (sperm and eggs) via meiosis which is a type…
Q: what does a oogenesis concept map with 10 words or phrases look like?
A: oogenesis concept map :-
Q: What is oogenesis? Give a brief account of oogenesis.
A: The female reproductive organs comprise primary sex organs (ovaries) as well as accessory sex…
Q: Are the extraembryonicmembranes the same in allvertebrates?
A: An embryo is an early phase development for an unborn baby. A small fertilized egg divides and grows…
Q: What are the distinguishable parts of the 72-hour chick embryo? Give at least 5 parts and the adult…
A: Probably the best magical occurrence of nature is the change of the egg into the chick. A chick…
Q: how is a childs wolrd broadend during the preoperational stage?
A: Piaget theory states the four different stages of the development of children and that depicts…
Q: What are the three germ layers formed during gas-trulation, and what are the principal structures…
A: Introduction :- Gastrulation is a process in which an embryo converts from a one-dimensional layer…
Q: what is celluar cleavage thats occur in the early stages of development?
A: The development of an embryo is characterized by the process of cell division and cellular…
Q: What is the significancw of cleavage in early development? Discuss.
A: The repeated mitotic divisons of the fertilized egg (zygote) is called cleavage. It is preceeded by…
Q: hat's an embryo?
A: In the sexual reproduction, animals bears two types of gametes. One is the female gamete known as…
Q: How is the yolk formed?
A: Cells are the basic structural and functional units of life. These are the building blocks that make…
Q: What is maternal effect?
A: The sperm only donates its nucleus at the time of fertilization. The cytoplasm of the zygote is…
Q: How do placental mammalsreproduce?
A: All mammals exhibit sexual reproduction. The male and the female gametes are fused to form the…
Q: Which embryonic germ layer lines the inner surface of the archenteron?
A: Germ layer can be seen in embryonic development in animal embryogenesis. It is the layer of cells.…
Q: What are the defferent mechanism the egg employed to ensure that only one sperm cell will fertilize…
A: Polyspermy is a fatal condition in which several sperm nucleus engage with the female nucleus.…
Q: What is gastrulation? Howduring gastrulation are thefirst two germ layers formed?What are these germ…
A: Reproduction is the process of development of new offspring from the existing organisms. It is of…
Q: Which germ layer does structure #5 arise from?
A: The given image depicts a chicken embryo after about 33 hours of fertilization. At this stage, the…
Q: What are the characteristics of the cleavage embryo?
A: Answer : Cleavage is the mitotic division in which the daughter cells are formed from the parent…
Q: In the adult Primordial Germ Cell, How many artia are present at thid stage? Discuss.
A: By the fourth week of pregnancy, primordial germ cells are seen near the allantois of the embryonic…
Q: What is the first polarbody? How different is it fromthe oocyte II?
A: Meiosis is a kind of cell division that takes place in sexually reproducing organisms which results…
Q: What is the function of the yolk, albumen and shell?
A: Eggs are laid by various oviparous species as a result of fertilization and a stage of reproduction.…
Q: What are the four initialstages of the embryonicdevelopment?
A: Answer: Introduction: Embryonic development is also known as embryogenesis, is the growth of an…
Q: Concerning their size andbasic morphology how andwhy do the male and thefemale gametes…
A: Gametes or the sex cells are produced by the meiosis process called gametogenesis. The production of…
Q: How do taenias classifyaccording to the division ofsexes?
A: Taenia is a genus of tapeworm belonging to Phylum Platyhelminthes. This phylum is characterised by…
Q: Can you explain oogenesis and the folllicular developments?
A: Oogenesis is the formation of the ovum in the female members of the mammals. It starts before birth,…
Q: How amount and distribution of yolk influence gastrulation
A: Gastrulation is a phase early in the embryonic development. During gastrulation, a single-layered…
Q: What is oogenesis?
A: An female’s internal reproductive organs are uterus, vagina, fallopian tubes, cervix, and ovary. The…
Q: What are Kinetochoremicrotubules?
A: Kinetochore is a structure present in chromosomes. Chromosome is a compact structure of a DNA…
Q: what are the principal structures each germ layer gives rise to in the adult?
A: The zygote is a cell formed by the union sex cell of the male (sperm) and sex cell of the female…
Q: Name two organ-system derivatives of each of the three germ layers.
A: A germ layer is a gathering of cells in an undeveloped organism that collaborate with one another as…
Q: How does distribution of the gray crescent affectthe developmental potential of the first two…
A: Introduction: Gray crescent is a cortical region present in the egg of the frog that is recently…
Q: How does the yolk help in forming a permanent solution?
A: How does the yolk help in forming a permanent solution?
What are the
predominating chemical
compounds respectively in
eggshell, white and yolk?
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