Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 4, Problem 32PDQ
Predict the F1 and F2 results of crossing a male fowl that is cock-feathered with a true-breeding hen-feathered female fowl. Recall that these traits are sex limited.
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Provide the responses to each of the following six blanks
In sheep, the presence and absence of horns is considered a sex influenced trait where the horned gene is dominant in rams but not in ewes. What will be the expected genotypes and phenotypes if heterozygous ram is bred to a heterozygous ewe?
Addition: In the above mating (a,b,&c), it is assumed that one-half of the expected heterozygous offspring produced are females and the other half are males.
Find the genotype of the missing
parent. In Andalusian fowls, the
black (B) and white (W) alleles are
incompletely dominant
In Andalusian fowls, black individudls
(B) and white individuals (W) are
homozygous. These alleles are
incompletely dominant. Heterozygous
fowls are bluish gray. A black bird is
crossed with a bluish gray bird. What is
the probability that the offspring are
black? White? Bluish gray?
В
W
BW
ww
W
BW
ww
% white
% black
% bluish gray
B.
B.
Chapter 4 Solutions
Concepts of Genetics (12th Edition)
Ch. 4 - In the guinea pig, one locus involved in the...Ch. 4 - In some plants a red flower pigment, cyanidin, is...Ch. 4 - Below are three pedigrees. For each trait,...Ch. 4 - Researching their family histories, a deaf couple...Ch. 4 - Researching their family histories, a deaf couple...Ch. 4 - HOW DO WE KNOW? In this chapter, we focused on...Ch. 4 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 4 - In shorthorn cattle, coat color may be red, white,...Ch. 4 - In foxes, two alleles of a single gene, P and p,...Ch. 4 - In mice, a short-tailed mutant was discovered....
Ch. 4 - List all possible genotypes for the A, B, AB, and...Ch. 4 - With regard to the ABO blood types in humans,...Ch. 4 - In a disputed parentage case, the child is blood...Ch. 4 - The A and B antigens in humans may be found in...Ch. 4 - In chickens, a condition referred to as creeper...Ch. 4 - In rabbits, a series of multiple alleles controls...Ch. 4 - Three gene pairs located on separate autosomes...Ch. 4 - As in Problem 12, flower color may be red, white,...Ch. 4 - Horses can be cremello (a light cream color),...Ch. 4 - With reference to the eye color phenotypes...Ch. 4 - Pigment in mouse fur is only produced when the C...Ch. 4 - In rats, the following genotypes of two...Ch. 4 - Given the inheritance pattern of coat color in...Ch. 4 - In a species of the cat family, eye color can be...Ch. 4 - In a plant, a tall variety was crossed with a...Ch. 4 - In a unique species of plants, flowers may be...Ch. 4 - Five human matings (15), identified by both...Ch. 4 - A husband and wife have normal vision, although...Ch. 4 - In humans, the ABO blood type is under the control...Ch. 4 - In Drosophila, an X-linked recessive mutation,...Ch. 4 - Another recessive mutation in Drosophila, ebony...Ch. 4 - In Drosophila, the X-linked recessive mutation...Ch. 4 - While vermilion is X-linked in Drosophila and...Ch. 4 - In a cross in Drosophila involving the X-linked...Ch. 4 - Consider the three pedigrees below, all involving...Ch. 4 - In goats, the development of the beard is due to a...Ch. 4 - Predict the F1 and F2 results of crossing a male...Ch. 4 - Two mothers give birth to sons at the same time at...Ch. 4 - Discuss the topic of phenotypic expression and the...Ch. 4 - Prob. 35PDQCh. 4 - Labrador retrievers may be black, brown...Ch. 4 - A true-breeding purple-leafed plant isolated from...Ch. 4 - In Dexter and Kerry cattle, animals may be polled...Ch. 4 - A geneticist from an alien planet that prohibits...Ch. 4 - The following pedigree is characteristic of an...Ch. 4 - Students taking a genetics exam were expected to...Ch. 4 - In four oclock plants, many flower colors are...Ch. 4 - Below is a partial pedigree of hemophilia in the...
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- Suppose a geneticist is using a three-point test cross to map three linked rabbit morphology and behavioral mutations called si, sf, and H. The gene si is associated with the silky fur phenotype, and sf is associated with the short-footed phenotype. Both si and sf are recessive mutations with respect to wild type. H is a dominant mutation that confers the hyper phenotype. The geneticist first crosses true-breeding hyper rabbits to true-breeding silky fur, short-footed rabbits. Next, the geneticist backcrosses the F₁ progeny to the silky fur, short-footed parents, and obtains the results reported in the table. Phenotype hyper silky fur, short-footed short-footed silky fur, hyper silky fur short-footed, hyper silky fur, short-footed, hyper wild type Place the genes in the correct order in the chromosome. LLIIN HEL H Number 815 807 175 169 4 5 27 29 Answer Bank si sfarrow_forwardGive typed explanation In pea plants, the tall allele (T) is dominant to the dwarf allele (t) and the yellow pea color allele (Y) is dominant to the green pea color allele (y). Cross TtYy with Ttyy. What would be the genotype and phenotype ratios in their offspring? (Please include the gametes produced by each parent.)arrow_forwardDo the punnnet squarearrow_forward
- Give only typing answer with explanation and conclusionarrow_forwardGive typing answer with explanation and conclusion What is the expected (predicted) frequency of the A2 allele if it is observed that 26 individual have the homozygous dominant genotype, 62 individuals have the heterozygous genotype and 75 individuals have the homozygous recessive genotype?arrow_forwardPlease solve this problem using the test cross branch diagram without a punnet square.arrow_forward
- If a drone with short wings and black eyes was mated to a queen that is heterozygous for both genes, what are the predicted genotypic and phenotypic frequencies of the offspring, (assume an equal number of male and female offspring are produced)?arrow_forwardIn the species Chinchilla chinchilla, Neotropical crepuscular rodent of the parvorder Caviomorpha, a mating between a homozygous long-tailed chinchilla male and a homozygous short chinchilla female will produce all medium length tail chinchilla offspring. When these medium length tail chinchilla offspring F₁ are mated, their offspring consists of 3 tail-less chinchillas, 24 long-tailed chinchillas, 120 medium-length tailed chinchillas, and 15 short-tailed chinchillas. What genetic interaction may be occurring in this population? Please explainarrow_forwardIn corn plants, a dominant allele (1) inhibits the expression of kernel color, while the recessive allele (1) promotes the expression of kernel color when homozygous. Another dominant allele, (P), causes purple kernel color, while the homozygous recessive genotype (pp) causes red kernels. Assuming that these alleles assort independently, predict the phenotypic ratio of the offspring if two plants dihybrid for these characteristics are crossed.arrow_forward
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