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Compare and contrast the similarities and differences of the model organism chicken and drosophila's oogenesis and spermatogenesis
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- Compare and contrast the oogenesis and spermatogenesis in chicken and drosophila melanogasterWhich of the following is an example of conditional specification? Multiple Drosophila nuclei division without cellularization of blastomeres Destroying one half of a 2 cell stage Xenopus embryo and subsequent loss of half the embryological structures Separation of sea urchin blastomeres resulting in individual pluteus larva development Differentiation concentration of paracrine factors within the embryo cytoplasmDesign a hypothetical experiment to determine the role of microtubules in gamete nuclear migration during fertilization of a fruit fly Drosophila melanogaster.
- Gametogenesis in mammals is a complex process. When comparing spermatogenesis and oogenesis, indicated whether the follow statements are true or false. After the S phase, both the spermatogonial stem cell and primary oocyte have the same number of double-copy chromosomes. #analyze Question 1 options: True False Both the first polar body and the second polar body have the same number of chromosomes. #analyze Question 2 options: True False After the S phase, both the spermatogonial stem cell and primary oocyte have the same number of double-copy chromosomes. #analyze Question 3 options: True False Both the primary oocyte and the secondary spermatocyte have double-copy chromosomes. #analyze Question 4 options: True FalseClownfish are protandrous hermaphrodites. Determine whether the following features are encoded by the clownfish genome or are influenced by the proteome in response to the environment. The juvenile clownfish has both male and female immature reproductive organs. Clownfish are able to produce both testosterone and 17-estradiol. Genome encoded Increased estradiol levels lead to increased levels of proteins that promote the growth of female sex organs. Increased testosterone levels lead to increased - levels of proteins that cause male sex organs to develop Proteome influencedWhich of the following is an example of autonomous specification? Multiple Drosophila nuclei division without cellularization of blastomeres Destroying one half of a 2 cell stage Xenopus embryo and subsequent loss of half the embryological structures Differentiation concentration of paracrine factors within the embryo cytoplasm Separation of sea urchin blastomeres resulting in individual pluteus larva development O o o
- Distinguish between the syncytial blastoderm stage and the cellular blastoderm stage in Drosophila embryogenesis.Temperature-dependent sex determination (TSD) is the method of sex determination in sea turtles. In TSD, temperature experienced during embryonic development determines the sex of the offspring. TSD is only observed in reptiles and teleost fish. The molecular mechanisms are not well understood, but the production of estrogen, which causes female development, seems to be critical. A potential pathway is shown in Figure 1.example of how some species switch between asexual and sexual reproduction? Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe three similarities and three Compare and contrast external versus internal fertilization. Describe at least three major differences. What is meant by 'sperm competition'? What is 'second male advantage'? Describe the case study of Drosophila melanogaster in your text. Describe the difference between oviparous, viviparous, and ovoviviparous. What evolutionary pressures would favor one form over the other? Use your text to identify all the structures in the figures below. Also provide a brief description of each structures function. male reproduction anatomy female reproductive anatomy
- What will be the effect on sexual development in newly fertilized Drosophila embryos if the following genes are deleted? Q. transformerNeurulation in model vertebrates and in fly follows soon after gastrulation.Do vertebrates and fly-related invertebrates adopt different strategies forneural development, both at the cellular and molecular level?Describe the role of the SRY gene in mammalian sexual development.
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