Which of the following statements about asexual organisms is true?
A. Asexual organisms can bring together two beneficial mutations that arise in different individuals
B. Asexual organisms can unlink deleterious mutations from beneficial ones
C. Populations of asexual organisms suffer when the most fit individuals fail to reproduce, causing the population's mean fitness to fall
Answer: C. Populations of asexual organisms suffer when the most fit individuals fail to reproduce, causing the population's mean fitness to fall
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If there are 32 sister chromatids in a normal somatic cell, what is the haploid number for that cell?
A. 8 B. 16 C. 32 D. 64 Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about sister chromatids? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Salivary glands secrete _________ to start the digestion of _________.
A. amylase; starch B. trypsin; proteins C. amylase; fats D. pepsin; proteins E. lactase; milk
Which is a difference between anaerobic respiration and aerobic respiration?
A Anaerobic respiration requires oxygen. B Anaerobic respiration does not require oxygen. C Anaerobic respiration occurs only at the cellular level. D Anaerobic respiration only occurs outside of the cell.
All of the following are common habitats or hosts of chytrids EXCEPT ________.
A. freshwater B. mud C. insects D. the human intestine E. soil