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- The process of gastrulation forms the _______. a. blastula b. zygote c. organs d. germ layersWhat type of gastrulation is depicted from the diagram below? (A) Blastopore Blastopore 4A 4D 4c 4b AB 4D 4a 4C ImR Invagination Involution Ingression Delamination Epiboly None of the choices ImL ImR 4D ImL BlastoporeResearch on the gastrulation of the following taxa i.e. Teleostei, Aves, Mammalia, and Insecta. Make a summary of the events that took place in these taxa.
- Gastrulation of the following taxa i.e. Teleostei, Aves, Mammalia, and Insecta. Make a summary of the events that took place in these taxa.Which of the following occurs to the blastocoel during Xenopus development? is replaced by the expanding archenteron becomes the archenteron gives rise to the mesoderm gives rise to the endodermStorage of milk is found within the of the breast . Montgomery's tubercles Lactiferous ducts Myoepithelium Alveoli
- In gastrulation explain reorganition of the embryonic cells, formation of germinal layers and name types of gastrulation.Describe the movement of cells during early development that change an embryo from a blastula to a gastrula. Name the three main germ layers, describe their relative locations, and list the fates of the cells descended from each layer. What is the name and significance of the opening in the gastrula?View this time-lapse movie(http://openstaxcollege.org/l/conceptus) of a conceptusstarting at day 3. What is the first structure you see? Atwhat point in the movie does the blastocoel first appear?What event occurs at the end of the movie?
- Illustrate an egg in early cleavage, distinguish this stage from thise that follow (2,4,8 cell stages; collectively called as blastomere). LabelGive position and structure of female sex organ in RicciaIn Ascaris, meiosis and oocyte maturation occur at the same time. Describe the stages that oocytes go through as they pass from the ovaries to the uterus in these worms.