Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 12, Problem 2AC
Many years ago, some researchers reported that they could transfer learning from one animal (a flatworm) to another by feeding trained animals to untrained animals. Further, they claimed that RNA was the active molecule of learning. Given your knowledge of the roles of RNA and protein in cells, do you think that a specific memory (for example, remembering the base sequences of codons of the genetic code) could be encoded by a specific molecule of RNA and that this RNA molecule could transfer that memory to another person? In other words, in the future, could you learn biology by popping an RNA pill? If so, how would this work? If not, can you propose a reasonable hypothesis for the results with
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1.) Community Diversity:
The brown and orange line represent two different plant communities.
a. Which color represents the community with a higher species richness?
b. Which color represents the community with a higher species evenness?
Relative abundance
0.1
0.04
0.001
2 4 6
8
10 12 14 16 18 20 22 24
Rank abundance
c. What is the maximum value of the Simpson's diversity index (remember, Simpson's
index is D = p², Simpson's diversity index is 1-D)?
d. If the Simpson's diversity index equals 1, what does that mean about the number of
species and their relative abundance within community being assessed?
1.) Community Diversity:
The brown and orange line represent two different plant communities.
a. Which color represents the community with a higher species richness?
b. Which color represents the community with a higher species evenness?
Relative abundance
0.1
0.04
0.001
2 4 6
8
10 12 14 16 18 20 22 24
Rank abundance
c. What is the maximum value of the Simpson's diversity index (remember, Simpson's
index is D = p², Simpson's diversity index is 1-D)?
d. If the Simpson's diversity index equals 1, what does that mean about the number of
species and their relative abundance within community being assessed?
what measures can a mother to take to improve the produce of her to milk to her newborn baby ?
Chapter 12 Solutions
Biology: Life on Earth
Ch. 12 - Prob. 1FTBCh. 12 - The three types of RNA that are essential for...Ch. 12 - 3. The genetic code uses______ (how many?) bases...Ch. 12 - The enzyme_______ synthesizes RNA from the...Ch. 12 - Protein synthesis begins when mRNA binds to a...Ch. 12 - Prob. 6FTBCh. 12 - How does RNA differ from DNA?Ch. 12 - Prob. 2RQCh. 12 - Define the following terms: genetic code, codon,...Ch. 12 - 4. How is mRNA formed from a eukaryotic gene?
Ch. 12 - 5. Diagram and describe protein synthesis.
Ch. 12 - 6. Explain how complementary base pairing is...Ch. 12 - 7. Describe the principal mechanisms of regulating...Ch. 12 - Define mutation. Describe four different effects...Ch. 12 - BioEthics As you have learned in this chapter,...Ch. 12 - Many years ago, some researchers reported that...Ch. 12 - Androgen insensitivity is inherited as a simple...Ch. 12 - The defective CFTR alleles that cause cystic...
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