In prokaryotes new mutations accumulate quickly in populations, while in eukaryotes new mutations accumulate much more slowly. The primary reasons for this are
A) Prokaryotes have short generation times and large population sizes.
B) Prokaryotes have random mutations while eukaryotes can target genes for mutations; thus mutations may not accumulate as quickly in eukaryotes but they are more useful to the organism.
C) The DNA in prokaryotes is not as stable as eukaryotic DNA and is thus more likely to mutate.
D) Prokaryote mutations are less effective than eukaryote mutations in providing variation for evolution.
A
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A. streptococci. B. sarcinae. C. tetrads. D. staphylococci.
The segmental arrangement of spinal nerves exiting the spinal column produces specific patterns of dermatomes (sensory distribution) and myotomes (motor distribution), which are very useful in clinical examination.
a. true b. false
Describe the primary types of plant organs, tissues and cells in each of the following: A) maple leaf and B) a potato. How do the organs, tissues and cells reflect the main function of each structure to the plant?
What will be an ideal response?
A stimulus producing a response that reduces the stimulus describes:
A) all stimulus-response chains. B) breakdown of homeostasis. C) negative feedback. D) positive feedback.