Assume that two pigments, red and bluc, mix to give the normal purple color of petunia petals. Separate biochemical pathways synthesize the two pigments, as shown in pathways I and Il in the accompanying diagram. "White" refers to compounds that are not pigments (total lack of pigment results in a white petal). Red pigment forms from a yellow intermediate that is normally at a concentration loo kow to color petals. Bluc mixed with yellow makes green. Assume that no mutations are lethal. Pathway I.. White Blue Pathway I White, Yellow Red Pathway II White, White, A third pathway, whose compoundk do not contribute pelal pigmentation, normally docs not allfect the bluc and red pathways. However, if one of its intermediates (white3) should build up in concentration, it can be converted into the ycllow intermediate of the red pathway. In the diagram, the letiers A through E represent enzymes. The enzymes' correspoonding genes, all of which are unlinked, may be symbolized by the same letters. Assume that wikl-type alleles are dominant and encode enzyme function, and that recessive alleles result in a lack of cnzyme function. Deduce which combinations of truc-breeding parental genotypes could be crossed to produce F2 progeny in these ratios. 9 purple : 3 green : 4 bluc O A/A ; bb x ala ; B/B O ala ; b x AIA ; b O A/A ; bb x AIA ; b A/A ; B/B x ala ; bb 9 purple : 3 red :3 bluc :1 white O A/A ; FEx ala ; ele O A/A ; ele x ala ; EE O A/A ; FE x ala ; E O A/A ; ele x ala ; ele 13 purple : 3 bluc A/A ; dd x ala ; DD O A/A ; IMD x ala ; IMD O AA ; did x ala ; did A/A ; DVD x ala ; did 9 purple : 3 red : 3 green : 1 yellow O B/B ; EE x R/B ; ele O B/B ; EE x bb; ele b/b ; EE x B/B ; EE B/B ; ele x b/b ; EE
Assume that two pigments, red and bluc, mix to give the normal purple color of petunia petals. Separate biochemical pathways synthesize the two pigments, as shown in pathways I and Il in the accompanying diagram. "White" refers to compounds that are not pigments (total lack of pigment results in a white petal). Red pigment forms from a yellow intermediate that is normally at a concentration loo kow to color petals. Bluc mixed with yellow makes green. Assume that no mutations are lethal. Pathway I.. White Blue Pathway I White, Yellow Red Pathway II White, White, A third pathway, whose compoundk do not contribute pelal pigmentation, normally docs not allfect the bluc and red pathways. However, if one of its intermediates (white3) should build up in concentration, it can be converted into the ycllow intermediate of the red pathway. In the diagram, the letiers A through E represent enzymes. The enzymes' correspoonding genes, all of which are unlinked, may be symbolized by the same letters. Assume that wikl-type alleles are dominant and encode enzyme function, and that recessive alleles result in a lack of cnzyme function. Deduce which combinations of truc-breeding parental genotypes could be crossed to produce F2 progeny in these ratios. 9 purple : 3 green : 4 bluc O A/A ; bb x ala ; B/B O ala ; b x AIA ; b O A/A ; bb x AIA ; b A/A ; B/B x ala ; bb 9 purple : 3 red :3 bluc :1 white O A/A ; FEx ala ; ele O A/A ; ele x ala ; EE O A/A ; FE x ala ; E O A/A ; ele x ala ; ele 13 purple : 3 bluc A/A ; dd x ala ; DD O A/A ; IMD x ala ; IMD O AA ; did x ala ; did A/A ; DVD x ala ; did 9 purple : 3 red : 3 green : 1 yellow O B/B ; EE x R/B ; ele O B/B ; EE x bb; ele b/b ; EE x B/B ; EE B/B ; ele x b/b ; EE
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,...
Related questions
Question
Transcribed Image Text:Assume that two pigments, red and bluc, mix to give the normal purple color of petunia petals. Separate biochemical pathways
synthesize the two pigments, as shown in pathways I and Il in the accompanying diagram. "White" refers to compounds that are
not pigments (total lack of pigment results in a white petal). Red pigment forms from a yellow intermediate that is normally at a
concentration loo kow to color petals. Bluc mixed with yellow makes green. Assume that no mutations are lethal.
Pathway I..
White
Blue
Pathway I White,
Yellow
Red
Pathway II
White,
White,
A third pathway, whose compoundk do not contribute pelal pigmentation, normally docs not allfect the bluc and red pathways.
However, if one of its intermediates (white3) should build up in concentration, it can be converted into the ycllow intermediate of
the red pathway. In the diagram, the letiers A through E represent enzymes. The enzymes' correspoonding genes, all of which are
unlinked, may be symbolized by the same letters.
Assume that wikl-type alleles are dominant and encode enzyme function, and that recessive alleles result in a lack of cnzyme
function. Deduce which combinations of truc-breeding parental genotypes could be crossed to produce F2 progeny in
these ratios.
9 purple : 3 green : 4 bluc
O A/A ; bb x ala ; B/B
O ala ; b x AIA ; b
O A/A ; bb x AIA ; b
A/A ; B/B x ala ; bb
9 purple : 3 red :3 bluc :1 white
O A/A ; FEx ala ; ele
O A/A ; ele x ala ; EE
O A/A ; FE x ala ; E
O A/A ; ele x ala ; ele
13 purple : 3 bluc
A/A ; dd x ala ; DD
O A/A ; IMD x ala ; IMD
O AA ; did x ala ; did
A/A ; DVD x ala ; did
9 purple : 3 red : 3 green : 1 yellow
O B/B ; EE x R/B ; ele
O B/B ; EE x bb; ele
b/b ; EE x B/B ; EE
B/B ; ele x b/b ; EE
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
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.Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education