IA MODIFIED MASTERING BIOLOGY WITH E TEX
12th Edition
ISBN: 9780136781752
Author: Urry
Publisher: PEARSON
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Chapter 14, Problem 4TYU
(a)
Summary Introduction
To know: The genotype of the gametes of AaBbCc parents.
Introduction: Test cross is defined as the cross between an individual of an unknown genotype and a recessive parent is called test cross. It is used to test whether an individual is homozygous or heterozygous.
(b)
Summary Introduction
A test cross is defined as the cross between an individual of an unknown genotype and a recessive parent is called test cross. It is used to test whether an individual is homozygous or heterozygous.
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To figure out the outcome of a cross, set up a Punnett square.a. Put the gametes of one parent at the top and those of theother on the left. To determine the allele(s) in each gamete fora given genotype, set up a systematic way to list all the possibilities. (Remember, each gamete has one allele of each gene.)Note that there are 2npossible types of gametes, where n is thenumber of gene loci that are heterozygous. For example, anindividual with genotype AaBbCc would produce 23 = 8 typesof gametes. Write the genotypes of the gametes in circlesabove the columns and to the left of the rows.b. Fill in the Punnett square as if each possible sperm werefertilizing each possible egg, making all of the possibleoffspring. In a cross of AaBbCc * AaBbCc, for example, thePunnett square would have 8 columns and 8 rows, so thereare 64 different offspring; you would know the genotype ofeach and thus the phenotype. Count genotypes and phenotypes to obtain the genotypic and phenotypic ratios. Becausethe…
In the following cross, imagine that you have a female fly that has two Xs and one Y
due to a nondisjunction event in her mother's germ cells. Draw out what the
possible gametes are for both the female and the male and also a Punnett square
showing the genotypes, phenotypes, and sex of the possible flies as a result of this
cross. You do not need to provide the probabilities of each of these.
Red-eyed wi
C Ở Red-eyed
wt
XX Y
X Y
Meiosis
Fruit fly body color is wild type (meaning normal) Gray = B+ and black = b
Fruit fly wing type is wild type normal wings = vg+ and vg = vestigial
A fly which was heterozygous for both traits was crossed with a fly that was recessive for both traits.
Write the genotype and phenotype that would be expected from this cross.
Write the genotype and phenotype percentages that would be expected from this cross.
Chapter 14 Solutions
IA MODIFIED MASTERING BIOLOGY WITH E TEX
Ch. 14.1 - DRAW IT Pea plants heterozygous for flower...Ch. 14.1 - WHAT IF? List all gametes that could be made by a...Ch. 14.1 - MAKE CONNECTIONS In some pea plant crosses, the...Ch. 14.2 - Prob. 1CCCh. 14.2 - Two organisms, with genotypcs BbDD and BBDd, are...Ch. 14.2 - WHAT IF? Three characters (flower color, seed...Ch. 14.3 - What two properties, one structural and one...Ch. 14.3 - If a man with type AB blood marries a woman with...Ch. 14.3 - WHAT IF? A rooster with gray feathers and a hen...Ch. 14.4 - Prob. 1CC
Ch. 14.4 - Prob. 2CCCh. 14.4 - Prob. 3CCCh. 14.4 - MAKE CONNECTIONS In Table 14.1, note the...Ch. 14 - When Mendel did crosses of true-breeding purple-...Ch. 14 - DRAW IT Redraw the Punnett Square on The right...Ch. 14 - Inheritance patterns are often more complex than...Ch. 14 - Both members of a couple know that they are...Ch. 14 - Prob. 1TYUCh. 14 - A man with type A blood marries a woman with type...Ch. 14 - A man has six fingers on each hand and six toes on...Ch. 14 - Prob. 4TYUCh. 14 - Flower position, stem length, and seed shape are...Ch. 14 - Hemochromatosis is an inherited disease caused by...Ch. 14 - The genotype of F1, individuals in a tetrahybrid...Ch. 14 - What is the probability that each of thc following...Ch. 14 - Prob. 9TYUCh. 14 - Prob. 10TYUCh. 14 - In tigers, a recessive allele of a particular gene...Ch. 14 - In maize (com) plants,a dominant allele I inhibits...Ch. 14 - The pedigree belowtraces the inheritance of...Ch. 14 - Imagine that you are a genetic counselor, and a...Ch. 14 - EVOLUTION CONNECTION Over the past half century,...Ch. 14 - SCIENTIFIC INQUIRY You are handed a mystery pea...Ch. 14 - Prob. 17TYUCh. 14 - SYNTHESIZE YOUR KNOWLEDGE Just for fun, imagine...
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Similar questions
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