give inherent constraints associated with the biology of the of zebra fish and quail or chicken eggs that hinders the complete assessment of its embryonic development conditions.
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give inherent constraints associated with the biology of the of zebra fish and quail or
chicken eggs that hinders the complete assessment of its embryonic development conditions.
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Solved in 2 steps
- Contrast early development, including cleavage, in the echinoderm (or in amphioxus), the amphibian, and the bird, paying particular attention to the importance of the amount and distribution of yolk.Enumerate the types of morphogenetic movements employed by vertebrate embryos in gastrulation. Give examples for each type. Type Drawing Example of structure/organism Invagination Involution. Draw and label parts of whole mount of chick embrogenesis specimens of the following stages: Primitive Streak Head formation Flexion and Torsion: Stage 13 Flexion and Torsion: Stage 16 Early Somite: Stage 7 Early somite: Stage 10 Limb-bud: Stage 19 Limb-bud: Stage 21
- Study the sea star development slides, including early and late stages and identify the following stages and structures: zygote, two cell stage, morula (stage), blastula (stage), blastocoel (cavity), archenteron (cavity), ectoderm (layer), endoderm (layer), gastrula (stage). **See Table 52.1, Section 52.3 & 52.4 in textbook ** Why is it useful to study the development of sea stars (Echinodermata) when studying human development? What do the two have in common?Explain the differences of paedomorphosis and peramorphosis using the figures and include concrete examples each.Make a table to identify amle and female homologues and describe it common function. Minimum of 7 organs.
- Briefly discuss avian early embryonic development, starting with fertilization and oviposition, cleavage, gastrulation, and early organogenesis and morphogenesis in the developing avian embryo inside the egg.From a 24-hour chick embryo, provide the answers in the following: Pairs of somites in a 24-hour chick embryo Germ layer/s that forms the head process What begins the formation head of process Germ layer/s that form the proamnion Explain why the notochord is not visible in areas where the somites are seen17 of 20 Select the phrase which describes the process of coelom formation by schizocoely O Occurs in protostomes and involves mesodermal tissue that is located in the space between the ectoderm layer and the endodermal wall of the archenteron O Occurs in protostomes and involves buding of mesodermal tissue from the archenteron O Occurs in deuterostomes and protostomes and involves migration of neural crest cells around the interior of the ectoderm cell layer O Occurs in deuterostomes and involves differentiation of endodermal tissue into mesoderm which buds from the primitive gut. O Occurs in protostomes and involves rounding-up endodermal tissue which forms the primitive gut lumen
- name the stage of development in this fish embryoDescribe how the reproductive structures of each organism are adapted towards the given characteristics of the animals: 1. Solitary and slow-moving lifestyle of Lissachatina fulica 2. Saltatory mode of life in Rhinella marina 3. Temperature regulation of mammalian sperm cell productionCompare the relative sizes and shapes of the area pellucida and opaca as seen in the 13-hour, 18-hour, and 21-hour chicken embryo whole mounts.Enumerate all observed structures that originated from the area pellucida and area opaca.