B 19. The image above shows the Hox gene expression boundaries (colored patches) mapped to the vertebral regional boundaries of a skate (Leucoraja). Based on the general biology of Hox genes, what can be said about the likely spatial arrangement of these genes in the skate genome? A) each Hox gene is on a separate chromosome B) the closely-spaced Hox genes on the left of this image would likely reside on the same chromosome but not the genes on the right C) the Hox genes would be colinear in the genome, having arisen from tandem duplications D) no particular pattern is expected for Hox gene distributions 20. Which of the following is NOT true about mutation? A) third-position codon mutations are less likely to be removed by natural selection, compared to first- or second-position B) non-synonymous substitutions are more likely to be removed from populations compared to synonymous substitutions C) Mutations arise in response to pressures of natural selection D) A nonsense mutation is more likely to be removed by natural selection compared to a synonymous mutation bax10 hovat
B 19. The image above shows the Hox gene expression boundaries (colored patches) mapped to the vertebral regional boundaries of a skate (Leucoraja). Based on the general biology of Hox genes, what can be said about the likely spatial arrangement of these genes in the skate genome? A) each Hox gene is on a separate chromosome B) the closely-spaced Hox genes on the left of this image would likely reside on the same chromosome but not the genes on the right C) the Hox genes would be colinear in the genome, having arisen from tandem duplications D) no particular pattern is expected for Hox gene distributions 20. Which of the following is NOT true about mutation? A) third-position codon mutations are less likely to be removed by natural selection, compared to first- or second-position B) non-synonymous substitutions are more likely to be removed from populations compared to synonymous substitutions C) Mutations arise in response to pressures of natural selection D) A nonsense mutation is more likely to be removed by natural selection compared to a synonymous mutation bax10 hovat
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:B
hoxa
harg
hoxat1
19. The image above shows the Hox gene expression boundaries (colored patches) mapped to the
vertebral regional boundaries of a skate (Leucoraja). Based on the general biology of Hox genes, what
can be said about the likely spatial arrangement of these genes in the skate genome?
A) each Hox gene is on a separate chromosome
B) the closely-spaced Hox genes on the left of this image would likely reside on the same
chromosome but not the genes on the right
C) the Hox genes would be colinear in the genome, having arisen from tandem duplications
D) no particular pattern is expected for Hox gene distributions
20. Which of the following is NOT true about mutation?
A) third-position codon mutations are less likely to be removed by natural selection, compared to
first- or second-position
B) non-synonymous substitutions are more likely to be removed from populations compared to
synonymous substitutions
C) Mutations arise in response to pressures of natural selection
D) A nonsense mutation is more likely to be removed by natural selection compared to a
synonymous mutation
baxto
baxdi1
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