Which of the following is most likely a lethal condition in mammals?
What will be an ideal response?
Polyploidy
You might also like to view...
Which of the following statements about spermatogenesis is false?
A. Sperm are motile as soon as they are produced. B. Secondary spermatocytes and spermatids are linked together by cytoplasmic bridges. C. Spermatogenesis takes 2–3 months. D. Sperm are produced continuously within the seminiferous tubules. E. None of the answer options is false.
At least some of the cells of a mammalian heart in the final phase of development would most likely be
A. undergoing apoptosis. B. dividing rapidly. C. expressing segmentation genes. D. expressing cardiac-specific transcription factors. E. either undergoing apoptosis or expressing cardiac-specific transcription factors.
You have been assigned to address a problem of overpopulation of species X in a nearby county. One of the members of your team suggests introducing species Y, which is a natural predator of species X, but not normally found in the area. After some discussion, you go ahead and introduce species Y. What aspects of the hierarchical organization may be affected within a period of a several years?
A. organism, population, species B. population, species, community, biosphere C. population, species, community D. population, community Clarify Question 1. What is the key concept addressed by the question? 2. What type of thinking is required? 3. What key words does the question contain and what do they mean? Gather Content 1. What do you know about hierarchical organization?How does it relate to the question? Consider Possibilities 1. What other information is related to the question? Which information is most useful? 2. If a predator is added which levels of structure would be affected? Choose Answer 1. Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process 1. Did your problem-solving process lead you to the correct answer? If not, where did the process breakdown or lead you astray? How can you revise your approach to produce a more desirable result? 2. This question asked you to predict the impact of a predator on different levels of a hierarchical system.If you got the correct answer, great job! If you got an incorrect answer, where did you get stuck?
In the development of an oocyte, meiosis is
halted twice. What are those two phases of meiosis?
a. prophaseI and metaphase I b. prophaseII and metaphaseII c. metaphase I and prophase II d. prophase I and metaphase II e. prophase I and anaphase II