Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 16, Problem 8TY
A hypothetical flowering plant species produces blue, light blue, and white flowers. To determine the inheritance pattern, the following crosses were conducted with the results indicated:
blue × blue → all blue
white × white → all white
blue × white → all light blue
What type of inheritance pattern does this represent?
- a. simple Mendelian
- b. X-linked
- c. codominance
- d. incomplete dominance
- e. pleiotropy
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In venetian violets, three phenotypes occur with respect to flower color: a deep violet (almost back), a white, and a pale lavender. Two pale lavender flowered plants have been crossed. The F1 from this cross has individuals with deep violet flowers, with pale lavender flowers, and individuals with white flowers.
A. what are the parent genotypes?
B. what would the expected phenotypic ratio be in these F1 plants?
For the cross: PpAa x PpAa
P = purple flowers (Dominant)
p = white flowers
A = axial flowers (Dominant)
a = terminal flowers
a. What are the possible gamete classes that can form from these parents?
b. What are the expected offspring genotype classes and ratios/proportions/fractions which will result from the cross?
c. What are the expected offspring phenotype classes and ratios/proportions/fractions which will result from the cross?
2.
Predict ratios/proportions/fractions of genotypes and phenotypes of the following crosses.
T = tall stem t = dwarf stem
P = purple flowers p = white flowers
G = green pods g = yellow pods
A = axial flowers a = terminal flowers
R = round peas r = wrinkled seeds
A. ttPp x Ttpp
B. GgRr x ggRr
C. PpGg x ppgg
J. W. McKay crossed a stock melon plant that produced tan seeds with a plant that produced red seeds and obtained the following results (J. W. McKay. 1936. Journal of Heredity 27:110–112). Cross F1 F2 tan ♀ × red ♂ 13 tan seeds 93 tan, 24 red seeds a. Explain the inheritance of tan and red seeds in this plant. b. Assign symbols for the alleles in this cross and give genotypes for all the individual plants.
Chapter 16 Solutions
Biology
Ch. 16.1 - Prob. 1CCCh. 16.1 - Prob. 2CCCh. 16.1 - Prob. 3CCCh. 16.1 - Prob. 4CCCh. 16.1 - Prob. 5CCCh. 16.1 - Mendels Laws of Inheritance Concept Check: What...Ch. 16.2 - Prob. 1BCCh. 16.2 - Prob. 2BCCh. 16.2 - Prob. 1CCCh. 16.3 - Prob. 1CC
Ch. 16.3 - Prob. 2CCCh. 16.4 - Prob. 1CCCh. 16.4 - Prob. 1EQCh. 16.4 - Prob. 2EQCh. 16.4 - Prob. 3EQCh. 16.5 - Prob. 1CCCh. 16 - Prob. 1TYCh. 16 - During which phase of nuclear division does the...Ch. 16 - Prob. 3TYCh. 16 - Which of Mendels laws cannot be observed in a...Ch. 16 - During a __________blank, an individual with the...Ch. 16 - Prob. 6TYCh. 16 - Prob. 7TYCh. 16 - A hypothetical flowering plant species produces...Ch. 16 - Genes located on a sex chromosome are said to be...Ch. 16 - Prob. 10TYCh. 16 - Prob. 1CQCh. 16 - A cross is made between individuals having the...Ch. 16 - Core Concept: Systems We can view life as a...Ch. 16 - Discuss the principles of the chromosome theory of...Ch. 16 - When examining a human pedigree, what patterns do...
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