Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 12, Problem 1A
Japanese four o’clocks that are red and tall are crossed to white short ones, producing an F1 that is pink and tall. If these genes assort independently, and the F1 is self-crossed, what would you predict for the ratio of F2
a. 3 red tall:1 white short
b. 1 red tall:2 pink short: 1 white short
c. 3 pink tall:6 red tall:3 white tall:1 pink short:2 red short:1 white short
d. 3 red tall:6 pink tall:3 white tall:1 red short:2 pink short:1 white short
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Suppose that in barley plants, the allele for tall stalks is dominant over short stalks and the allele for wide leaves is dominant over thin leaves. What would be the best way to determine the genotype of a barley plant with a tall stalk and wide leaves?
Choose 1 answer:
A.Perform a testcross with a barley plant that has a tall stalk and thin leaves.
B.Perform a testcross with a known heterozygous barley plant .
C. Perform a testcross with a barley plant that has a short stalk and thin leaves.
D. Perform a testcross with a barley plant that has a tall stalk and wide leaves.
The pedigree below represents which individuals in a given family have attached earlobes. Unattached earlobes are dominant over attached earlobes.Which of the following statements is true of the pedigree?
a
Individuals 8 and 9 are heterozygous for the trait.
b
Individuals 1, 2, 3, and 4 have attached earlobes.
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Individuals 6, 7, and 10 are male.
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Individuals 11 and 12 are identical twins
Red flowers are dominat to white flowers, and tall stems are dominant to short stems. A plant that is homozygous for red flowers and heterozygous for height is crossed with a plant that is heterozygous for both traits.
a) show the alleles for both traits, using proper notation
b) Possible genotypes for red flowers, and for white flowers
c) Possible genotypes for tall plants, and for short plants
d) give the full genotypes for each plant
e) give the possible gametes for each plant
f) give the phenotype ration of the offspring
Chapter 12 Solutions
Biology
Ch. 12 - What property distinguished Mendels investigation...Ch. 12 - The F1 generation of the monohybrid cross purple...Ch. 12 - The F1 plants from the previous question are...Ch. 12 - In a cross of Aa Bb cc X Aa Bb Cc, what is the...Ch. 12 - An organisms __________ is/are determined by its...Ch. 12 - Phenotypes like height in humans, which show a...Ch. 12 - Japanese four oclocks that are red and tall are...Ch. 12 - If the two genes in the previous question showed...Ch. 12 - What is the probability of obtaining an individual...Ch. 12 - Prob. 4A
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