BIOLOGY:DYNAMIC SCIENCE-ACCESS >CUSTOM<
4th Edition
ISBN: 9781337254175
Author: Russell
Publisher: CENGAGE C
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Textbook Question
Chapter 19, Problem 10TYK
When two protein-coding genes have very similar
a. one of them is a duplicate of the other, copied by aretrotransposon.
b. they are nonhomologous.
c. one of them is a pseudogene.
d. they were produced by unequal crossing-over.
e. they are transcribed in the same cell types.
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Consider two different genes that are highly expressed in the tissue of your spleen (but not expressed in any other tissue in your body). Which of the following describes something that these two different genes have in common?
A) Both of these genes must have the same set of control element sequences associated with them.
B) Both of these genes must be present in spleen cells, but absent from the cells in the rest of your body.
C) Both of these genes must be located on the same chromosome.
D) Both of these genes must be the same length.
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The origin of genes that have new functions often involves the divergence of gene duplicates.Duplicates can arise via several mechanisms. a. One mechanism of gene duplication is retrotransposition, the insertion into the genome of DNA produced by reverse transcription of a messenger RNA. These gene duplicates are often dead on arrival: they are pseudogenes as soon as they are formed. Why are such duplicates so often dead on arrival? b. A second mechanism of gene duplication occurs via unequal crossing over during meiosis. Gene duplicates formed this way are functional more often than when they arise by reverse transcription. Why is that? c. If a gene duplicate is initially functional, what are its possible ultimate fates? Which is most likely,and why?
Chapter 19 Solutions
BIOLOGY:DYNAMIC SCIENCE-ACCESS >CUSTOM<
Ch. 19.1 - What additional biological questions can be...Ch. 19.2 - What is the principle behind whole-genome shotgun...Ch. 19.2 - Prob. 2SBCh. 19.2 - Prob. 3SBCh. 19.2 - Prob. 4SBCh. 19.3 - Prob. 1SBCh. 19.3 - Prob. 2SBCh. 19.3 - Prob. 3SBCh. 19.4 - Prob. 1SBCh. 19.4 - Prob. 2SB
Ch. 19 - Prob. 1TYKCh. 19 - How do pseudogenes differ from genes? a. They are...Ch. 19 - Prob. 3TYKCh. 19 - Prob. 4TYKCh. 19 - Prob. 5TYKCh. 19 - Prob. 6TYKCh. 19 - About 95% of the average human transcription unit...Ch. 19 - Prob. 8TYKCh. 19 - Prob. 9TYKCh. 19 - When two protein-coding genes have very similar...Ch. 19 - Prob. 11TYKCh. 19 - Prob. 12TYKCh. 19 - Prob. 13TYKCh. 19 - Discuss Concepts The genome of the yeast...Ch. 19 - Prob. 15TYKCh. 19 - Prob. 16TYKCh. 19 - Prob. 17TYKCh. 19 - Below is a sequence of 540 bases from a genome....
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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
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- Most organisms display a circadian rhythm, a cycling of biological processes that is roughly synchronized with day length. In Drosophila, pupae eclose (emerge as adults after metamorphosis) at dawn. a)Using this knowledge how would screen for Drosophila mutants that have an impaired circadian rhythm? b)In each case, how would you clone the genes you identified by mutation?arrow_forwardWhich of the following statements about histones is true?a. They are proteins whose sequence is highly conserved in all eukaryotes.b. They are the building blocks of nucleosomes.c. a and b are correct.d. None of the above are correct.arrow_forwardA biology professor at a prestigious university stated to his introductory class that "Today, a basic understanding of DNA and genetics is as important as a basic understanding of computers and the internet."Based upon what you have learned about DNA and gene expression in this module, how could you make a case to support this statement?arrow_forward
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