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Questions and Answers
Which type of eggs have yolk that is localized to one half of the egg, known as the vegetal hemisphere?
Which type of eggs have yolk that is localized to one half of the egg, known as the vegetal hemisphere?
Which class of eggs has yolk concentrated in the centre with a peripheral layer of yolk free periplasm?
Which class of eggs has yolk concentrated in the centre with a peripheral layer of yolk free periplasm?
Which type of eggs have even distribution of little yolk throughout the cytoplasm?
Which type of eggs have even distribution of little yolk throughout the cytoplasm?
Which type of eggs are described as having moderate to large amounts of yolk that fill the cytoplasm except for a small area near the animal pole?
Which type of eggs are described as having moderate to large amounts of yolk that fill the cytoplasm except for a small area near the animal pole?
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Where are most amphibian eggs, such as Xenopus laevis, classified in terms of yolk distribution?
Where are most amphibian eggs, such as Xenopus laevis, classified in terms of yolk distribution?
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Which class of eggs belongs to animals like zebrafish and chick?
Which class of eggs belongs to animals like zebrafish and chick?
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What was the reason chicken eggs were chosen for the first microscopic study of embryonic development according to the text?
What was the reason chicken eggs were chosen for the first microscopic study of embryonic development according to the text?
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Which animal model was used for more than 50 years before the South African clawed frog Xenopus laevis became prominent according to the text?
Which animal model was used for more than 50 years before the South African clawed frog Xenopus laevis became prominent according to the text?
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What makes the South African clawed frog Xenopus laevis an attractive model for developmental studies?
What makes the South African clawed frog Xenopus laevis an attractive model for developmental studies?
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Why are chicken eggs considered excellent for micromanipulation studies according to the text?
Why are chicken eggs considered excellent for micromanipulation studies according to the text?
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What significance does the chick genome sequencing have according to the text?
What significance does the chick genome sequencing have according to the text?
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What is a unique advantage of using chicken eggs for propagating viruses, as mentioned in the text?
What is a unique advantage of using chicken eggs for propagating viruses, as mentioned in the text?
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Why did Marcello Malpighi choose chicken embryos for the first microscopic study of embryonic development?
Why did Marcello Malpighi choose chicken embryos for the first microscopic study of embryonic development?
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What did Sir John Gurdon use Xenopus laevis for in his pioneering studies?
What did Sir John Gurdon use Xenopus laevis for in his pioneering studies?
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Why is Xenopus tropicalis preferred over Xenopus laevis for genetic studies?
Why is Xenopus tropicalis preferred over Xenopus laevis for genetic studies?
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What significant similarity do the genomes of Xenopus laevis and Xenopus tropicalis share with mammals?
What significant similarity do the genomes of Xenopus laevis and Xenopus tropicalis share with mammals?
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Why was Zebrafish (Danio rerio) chosen as a model organism for large scale genetic screens?
Why was Zebrafish (Danio rerio) chosen as a model organism for large scale genetic screens?
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Which Nobel laureate initiated a systematic attempt to identify all the genes involved in zebrafish development?
Which Nobel laureate initiated a systematic attempt to identify all the genes involved in zebrafish development?
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What is one factor that makes Xenopus laevis unsuitable for classical genetics?
What is one factor that makes Xenopus laevis unsuitable for classical genetics?
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Which species has largely tetraploid genome among Xenopus laevis and Xenopus tropicalis?
Which species has largely tetraploid genome among Xenopus laevis and Xenopus tropicalis?
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What did Sir John Gurdon's studies on mature cells reprogramming lead to?
What did Sir John Gurdon's studies on mature cells reprogramming lead to?
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What is the function of the zona pellucida in preventing fertilization by sperm of different species?
What is the function of the zona pellucida in preventing fertilization by sperm of different species?
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What protein is the sperm receptor of the mouse egg?
What protein is the sperm receptor of the mouse egg?
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What event induces the acrosome reaction in sperm?
What event induces the acrosome reaction in sperm?
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What is the purpose of the cortical reaction in fertilization?
What is the purpose of the cortical reaction in fertilization?
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Why is it important for the mammalian egg to prevent polyspermy?
Why is it important for the mammalian egg to prevent polyspermy?
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What is released during the cortical reaction that helps prevent polyspermy?
What is released during the cortical reaction that helps prevent polyspermy?
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Which cellular event allows sperm to penetrate through the zona pellucida?
Which cellular event allows sperm to penetrate through the zona pellucida?
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What would happen if polyspermy occurs during fertilization in mammals?
What would happen if polyspermy occurs during fertilization in mammals?
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What is the main function of Chorionic Gonadotrophin as mentioned in the text?
What is the main function of Chorionic Gonadotrophin as mentioned in the text?
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What is the primary function of nurse cells in relation to oocytes?
What is the primary function of nurse cells in relation to oocytes?
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How do ostrich eggs differ from human eggs?
How do ostrich eggs differ from human eggs?
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What happens to the number of oocytes in the fetal ovary from the fetal stage to puberty in humans?
What happens to the number of oocytes in the fetal ovary from the fetal stage to puberty in humans?
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What is the significance of vitellogenin genes detected in the human genome?
What is the significance of vitellogenin genes detected in the human genome?
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Which organism was introduced into UK laboratories in the 1930’s and used as a pregnancy test?
Which organism was introduced into UK laboratories in the 1930’s and used as a pregnancy test?
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What is the primary source of synthesis for yolk proteins in vertebrates?
What is the primary source of synthesis for yolk proteins in vertebrates?
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Why are some insect sperm longer than the egg itself?
Why are some insect sperm longer than the egg itself?
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