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- Fill in the blank: The _______________________ is the funnel-shaped expansion at the end of a uterine tube.Cite the difference between grasshopper and rat testes. Cite the differences of spermatogenesis on grasshoppen and rat.Fill in the blank: The _______________________ is a highly coiled tube on the surface of the testis.
- Fill in the following table with the words from the list below. ovary | B. oviducts | C. vagina |D. uterus | Urogenital Sinus _________ 1. where gestation occurs _________ 2. copulatory organ and part of the birth canal _________ 3. extremely small tubes on the surface of each ovary where fertilization may occur _________ 4. chamber formed by the fusion of the vagina and urethra _________ 5. female gonad which produces eggs and female sex hormones.Which of the following statements is incorrect? a) Sperm occur as X- or Y-chromosome bearing gametes b) The sex of an individual can not be determined from morphology early in embryonic development c) It is the ovum which determines the sex of the newly developing embryo d) X-chromosome bearing sperm are slightly larger than Y-chromosome bearing spermFill in the blank: The meiosis of egg formation is called _______________________.
- In tabular form, Cite the differences of spermatogenesis on frog and chicken.1. Trace the pathway of spermatozoa of the male frog from the place of production up to the place of release from the body in the picture. 2. Trace the pathway of the ova of the female frog from the place of production up to the place of release from the body in the picture. Trace the pathway using an arrow in the picture.Compare and contrast the Spermatogenesis and structure of the testes of: Rat (Vertebrates) Starfish (Invertebrates) Grasshopper (Insects) Frogs (Amphibians)
- In frog neurulation the notochord _______ the formation of the _______ in the ectoderm next to it. Group of answer choices expresses, neural plate induces, neural plate induces, somites expresses, somitesThe process of spermatogenesis produces __________ functional sperm and Oogenesis produces ___________ functional egg(s): A. 1 and millions B. 4 and millions C. 4 and 1 D. 1 1 and 4 E. 4 and billionsIn humans, one primary spermatocyte yields _____ sperm and _____ polar body(ies), while one primary oocyte yields _____ oocyte(s) and _____ polar body(ies). 1; 2; 1; 2 1; 2; 4; 0 4; 0; 1; 2 4; 0; 4: 0 2; 2; 2; 2