Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 43, Problem 42CTQ
Why do mammalian eggs have a small concentration of yolk, while bird and reptile eggs have a large concentration of yolk?
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Chapter 43 Solutions
Biology 2e
Ch. 43 - Figure 43.8 Which of the following statements...Ch. 43 - Figure 43.15 Which of the following statements...Ch. 43 - Figure 43.17 Which of the following statements...Ch. 43 - Which form of reproduction is thought to be best...Ch. 43 - Which form of reproduction can result from damage...Ch. 43 - Which form of reproduction is useful to an animal...Ch. 43 - Genetically unique individuals are produced...Ch. 43 - External fertilization occurs in which type of...Ch. 43 - Which term applies to egg development within the...Ch. 43 - Which term applies to egg development outside the...
Ch. 43 - Sperm are produced in the______ scrotum seminal...Ch. 43 - Most of the bulk of semen is made by the...Ch. 43 - Which of the following cells in spermatogenesis is...Ch. 43 - Which female organ has the same embryonic origin...Ch. 43 - Which female organ has an endometrial lining that...Ch. 43 - How many eggs are produced as a result of one...Ch. 43 - Which hormone causes Leydig cells to make...Ch. 43 - Which hormone causes FSH and LH to be released?...Ch. 43 - Which hormone signals ovulation? FSH LH inhibin...Ch. 43 - Which hormone causes the regrowth of the...Ch. 43 - Nutrient and waste requirements for the developing...Ch. 43 - Progesterone is made during the third trimester by...Ch. 43 - Which contraceptive method is 100 percent...Ch. 43 - Which type of short term contraceptive method is...Ch. 43 - Which hormone is primarily responsible for The...Ch. 43 - Major organs begin to develop during which part of...Ch. 43 - Which of the following is false? The endoderm,...Ch. 43 - During cleavage, the mass of cells: increases...Ch. 43 - Which of the following gives rise to the skin...Ch. 43 - The ribs form from the ___________ . notochord...Ch. 43 - Why is sexual reproduction useful if only half the...Ch. 43 - What determines which sex will result in offspring...Ch. 43 - What are the advantages and disadvantages of...Ch. 43 - Why would paired external fertilization be...Ch. 43 - Describe the phases of the human sexual response.Ch. 43 - Compare spermatogenesis and oogenesis as to timing...Ch. 43 - If male reproductive pathways are not cyclical,...Ch. 43 - Describe the events in the ovarian cycle leading...Ch. 43 - Describe the major developments during each...Ch. 43 - Describe the stages of labor.Ch. 43 - What do you think would happen if multiple sperm...Ch. 43 - Why do mammalian eggs have a small concentration...Ch. 43 - Explain how the different germ layers give rise to...Ch. 43 - Explain the role of axis formation in development.
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If it takes just one sperm to fertilize an egg,why do males make so many?arrow_forwardDescribe the gastrulation by using embryos of the sea star as an example.And describe the way in which the mass of inert yolk influences the gastrulation in bird and frog embryos.arrow_forwardWhere does the fertilization of a human egg normally take place?arrow_forward
- Explain: Is the degenerating blastocoel visible in the frog gastrula? How much yolk protrudes through the blastopore of a frog gastrula How much yolk protrudes through the blastopore of a frog gastrula? Chickens lack a larval stage. How do they compensate for this?arrow_forwardHermaphroditic animals can self-fertilize, except earthworms. Why? And is this an advantageous or disadvantageous trait to the earthworms?arrow_forwardRegarding mammals, amphibians, and reptiles, explain thoroughly in what way does the inert yolk's mass affects their gastrulation?arrow_forward
- Explain the way in which the yolk amount affects the cleavage. Compare the Cleavage in a sea star and bird.arrow_forwardOf all birds, the flightless kiwi has the highest proportion of yolk in its eggs and the longest incubation time. Explain why birds with the longest incubation times have the yolkiest eggs.arrow_forwardWhat are the stages of egg cell development in humans?arrow_forward
- Investigate how the mass of the inert yolk affects reptiles, mammals and amphibians gastrulationarrow_forwardIn your own words: Expound how the mass of inert yolk influences gastrulation in amphibians, reptiles, and mammals.arrow_forwardCompare the structures of the egg and sperm. What structural modifications do sperm have that facilitate movement, energy use, and gaining access to the egg?arrow_forward
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