Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 13TYK
Genomic imprinting
- a. explains cases in which the
phenotypic effect of an allele depends on the sex of the parent from whom that allele is inherited. - b. may involve the silencing of an allele by methylation such that offspring inherit only one active copy of a gene.
- c. occurs more often in females because of the larger maternal contribution of cytoplasm.
- d. involves both a and b.
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In genetic maternal effect, the phenotype of the individual is determined by which of these statements?
A. The sex of the parent who transmits the gene
B. The nuclear genotype of the maternal parent
C. The sex of the individual with only one sex able to express the phenotype
D. Cytoplasmic genes usually located in the mitochondria
E. A combination of environmental factors and the genotype of the individual
A. Deletion of the SOX9 gene leads to sex reversal resulting in a person with karyotype 46XY being phenotypically Explain the genetic basis for this.
B. Describe what would happen to the phenotype of a male with a mutation in the gene encoding SF1? Explain your answer.
Imagine a scenario in which prenatal testing of a human female fetus indicates that the baby will have a normal XX karyotype but is heterozygous for a mutation that inactivates the Xist promoter. Allele “Xr” represents the mutated version of the Xist promoter, and “XR” represents the normal version of the Xist promoter.
How will this mutation affect the process of X inactivation?A. "X inactivation will still be random with both mutant and normal X chromosomes being randomly inactivated"
B. "The chromosome with the mutant Xist promoter will always be active"
C. "The chromosome with the mutant Xist promoter will always be inactivated"
D. "The normal X chromosome (no mutation in Xist) will always be active"
E. "The normal X chromosome (no mutation in Xist) will always be inactivated"
Chapter 15 Solutions
Study Guide for Campbell Biology
Ch. 15 - Complete the following summary of Morgans crosses...Ch. 15 - Two normal color-sighted individuals have two...Ch. 15 - In a testcross between a heterozygote tall,...Ch. 15 - With unlinked genes, an equal number of parental...Ch. 15 - The following recombination frequencies have been...Ch. 15 - a. What is the difference between an organism with...Ch. 15 - Prob. 7IQCh. 15 - Prob. 8IQCh. 15 - Mendels law of independent assortment applies to...Ch. 15 - You have found a new mutant phenotype in fruit...
Ch. 15 - Prob. 3SYKCh. 15 - Prob. 4SYKCh. 15 - Thomas Hunt Morgan firmly established the location...Ch. 15 - Prob. 2TYKCh. 15 - Sex-linked traits a. are coded for by genes...Ch. 15 - Prob. 4TYKCh. 15 - Prob. 5TYKCh. 15 - Prob. 6TYKCh. 15 - Prob. 7TYKCh. 15 - Prob. 8TYKCh. 15 - Prob. 9TYKCh. 15 - Prob. 10TYKCh. 15 - Consider three genes on the X chromosome: A, B,...Ch. 15 - Prob. 12TYKCh. 15 - Genomic imprinting a. explains cases in which the...Ch. 15 - Prob. 14TYKCh. 15 - Prob. 15TYKCh. 15 - Suppose that alleles for an X-linked character for...Ch. 15 - Some girls who fail to undergo puberty are found...Ch. 15 - Prob. 18TYKCh. 15 - The genetic event that results in Turner syndrome...Ch. 15 - Prob. 20TYKCh. 15 - Prob. 1GPCh. 15 - Prob. 2GPCh. 15 - Prob. 3GPCh. 15 - Prob. 4GPCh. 15 - Prob. 5GPCh. 15 - Red-green color blindness is caused by a...
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- If a Drosophila female that is homozygous for an X-linked recessive mutation is bred with a male that carries the corresponding wild-type allele, the offspring will..... a. show the mutant phenotype in all individuals. b. be uniform wild-type. c. show a phenotype intermediate to the parents' phenotype. d. show the mutant phenotype in all males and the wild-type phenotype in all females. e. have mutant and wild-type males and mutant and wild-type females.arrow_forwardCategorize each of the following events as an example of genetic inheritance or epigeneticinheritance. a. For a line of liver cells growing in a laboratory, a gene encoding an immune cytokine isfound in compact chromatin.b. A chromosomal rearrangement in a blood stem cell leads to leukemia.c. Haploid bees are male, and diploid bees are female.d. Among genetically identical lab mice, those exposed to cigarette smoke have a higherrate of developing lung tumorsarrow_forwardWhich of the following is associated with chemical modifications to chromosomes that label alleles as coming from the mother or father? a. Multiple alleles b. Extranuclear inheritance c. Epigenetic marks d. Small non coding RNAsarrow_forward
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