......... is not developmental event in human and frog. After fertilization rapid cycle of mitosis occurs formation of mesoderm,ecto and endoderm formation of placenta from trophoblast large cellular movement during gastrulation
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Q: After the eighth week of development an embryos is referred to as what?
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......... is not developmental event in human and frog.
After fertilization rapid cycle of mitosis occurs
formation of mesoderm,ecto and endoderm
formation of placenta from trophoblast
large cellular movement during gastrulation
Step by step
Solved in 3 steps
- Internal and external fertilization both ……… occur only among birds. produce single-celled zygotes. depend on the use of intromittent copulatory organs. occur only among terrestrial animals. occur only among invertebrates.State and explain 5 effects of tobacco smoking by a pregnant mother on the foetus development. (400 words) Identify and explain 5 disadvantages of In vitro fertilisation (IVF) as an intervention to have a baby. (400 words) Why is breast feeding in the first 3month of a baby very important? (200 words) Higher animals undergo sexual reproduction despite its complexity, why. Give 5 reasons. (400 words) Describe five changes that occur in a flower after fertilisation. (200 words)After fertilization a developing embryos goes through several changes. At about 2-3 days, what is the embryo referred to as?
- Trophoblast or ICM? If cells choose to become trophoblast, they will end up in the placenta. If they choose to become ICM, they will give rise to the 3 germ layers that will make up the rest of the body of the embryo. Answer the following questions: What will guide them to make the right decision? Do they have a choice?Immature eggs that develop into an ovum are called....... Please I need a quicker responsefill the sentence? ........is an increase in the number of normal cells of an organ or tissue. for example, increase in the size of the breats during pregenancy, increase in thicker of endometrium during menstrul cycle.
- Zygote Embryo Muscle cells Intestinal cells Liver cells Blood cells Nerve cell Cardiac cells (1) Specialization occurs, resulting in the formation of a great variety of cell types. (2) Genes are inserted into the zygote to allow for the formation of different cell types. (3) The expression of genes responsible for the different cell types is controlled by the placenta. (4) The genetic information in the zygote is divided to produce a complete set for each cell typeexplain the developmental processes that will happen to the fertilized ovum of a dog or any animalEndoderm Mesoderm Ectoderm Match the structures below with the correct germ layers listed above that they are formed from. Number: Answer Answer Answer Answer Tissues and Organs: Central Nervous System Lining of the Digestive Tract Skin Skeleton
- If an egg cell were treated with EDTA, a chemical that bindscalcium and magnesium ions,(A) the acrosomal reaction would be blocked.(B) the fusion of sperm and egg nuclei would be blocked.(C) the fast block to polyspermy would not occur.(D) the fertilization envelope would not form.Fertilization primarily occurs in the oviduct yet implantation usually occurs in the uterus. Why?During the embryonic period each of the three germ layers gives rise to a number of specific tissues & organs, one of the following statements is not true? O a. The intermediate mesoderm will give rise to the urogenital system. O b. Blood cells & blood vessels arise from the mesoderm. O c. Paraxial mesoderm is divided into small segment (blocks) known as somites. O d. Neurulation is the process by which the neural plate forms the gut tube. O e. In general, the ectoderm gives rise to structures & organs that maintain contact with the outside world. Clear my choice
