WTCC BIOLOGY PACKAGE W/ ACCESS >C<
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ISBN: 9781269715485
Author: Urry
Publisher: Pearson Custom Publishing
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Chapter 15.4, Problem 2CC
Summary Introduction
To determine: In which parent the non-disjunction of chromosome 9 has occurred based on the information that the father is of blood type AB and mother is of blood type O, and their child is of the blood type A with trisomy in chromosome 9
Concept introduction:
The term non-disjunction means that the chromosomes that appeared together in the cell did not separate during the gamete formation and were carried together into the gamete formed. The non-disjunction of the paired chromosome leads to the chromosomal aberration called trisomy in the offspring.
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Students have asked these similar questions
6. Consider your btoehr and your son.
a. If you are female, will your brother and your son have essentially identically Y chromosomes? Explain your answer.
b. If you are male, will your brother and your son have essentially identical Y chromosomes? Explan your answer.
EVOLUTION CONNECTION Crossing over is thought to beevolutionarily advantageous because it continually shufflesgenetic alleles into novel combinations. Until recently, it wasthought that the genes on the Y chromosome might degenerate because they lack homologous genes on the X chromosomewith which to pair up prior to crossing over. However, when theY chromosome was sequenced, eight large regions were foundto be internally homologous to each other, and quite a few ofthe 78 genes represent duplicates. (Y chromosome researcherDavid Page has called it a “hall of mirrors.”) Explain what mightbe a benefit of these regions.
Observation 2: Complete monosomies are generally not viable except for monosomy X. Complete trisomies are viable for chromosomes 13, 18, 21, X, and Y. Phenotype caused by rearrangement depends on the type of rearrangement, the size and the location of the affected segment.
Question:
Why do you think X chromosome is mostly involved?
Chapter 15 Solutions
WTCC BIOLOGY PACKAGE W/ ACCESS >C<
Ch. 15.1 - Which one of Mendel's laws describes the...Ch. 15.1 - MAKE CONNECTIONS Review the description of...Ch. 15.1 - WHAT IF? Propose a possible reason that the first...Ch. 15.2 - A white-eyed female Drosophila is mated with a...Ch. 15.2 - Neither Tim nor Rhoda has Duchenne muscular...Ch. 15.2 - MAKE CONNECTIONS Consider what you learned about...Ch. 15.3 - When two genes are located on the same chromosome,...Ch. 15.3 - VISUAL SKILLS For each type of offspring of the...Ch. 15.3 - Prob. 3CCCh. 15.4 - Prob. 1CC
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.5 - Gene dosagethe number of copies of a gene that are...Ch. 15.5 - Reciprocal crosses between two primrose varieties,...Ch. 15.5 - WHAT IF? Mitochondrial genes are critical to the...Ch. 15 - What characteristic of the sex chromosomes allowed...Ch. 15 - Why are males affected by X-Iinked disorders much...Ch. 15 - Why are specific alleles of two distant genes more...Ch. 15 - Prob. 15.4CRCh. 15 - Explain how genomic imprinting and inheritance of...Ch. 15 - A man with hemophilia (a recessive, sex-linked...Ch. 15 - Pseudohypertrophic muscular dystrophy is an...Ch. 15 - A wild-type fruit fly (heterozygous for gray body...Ch. 15 - A planet is inhabited by creatures that reproduce...Ch. 15 - Using the information from problem 4, scientists...Ch. 15 - A wild-type fruit fly (heterozygous for gray body...Ch. 15 - Assume that genes, A and B are on the same...Ch. 15 - Two genes of a flower, one Controlling blue (B)...Ch. 15 - You design Drosophila crosses to provide...Ch. 15 - Banana plants, which are triploid, are seedless...Ch. 15 - EVOLUTION CONNECTION Crossing over is thought to...Ch. 15 - SCIENTIFIC INQUIRY DRAW IT Assume you are mapping...Ch. 15 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 15 - SYNTHESIZE YOUR KNOWLEDGE Butter flies have an X-Y...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Design an Experiment Imagine that you are a breeder of Labrador retriever dogs. Labs can be black, chocolate brown, or yellow. Suppose that a yellow Lab is donated to you and you need to know its genotype. You have a range of dogs with known genotypes. What cross would you make to determine the genotype of the donated dog? Explain how the resulting puppies show you the Labs genotype.arrow_forwardDiscuss Concepts One of the human chromosome pairs carries a gene that influences eye color. In an individual human, one chromosome of this pair has an allele of this gene that contributes to the formation of blue eyes. The other chromosome of the pair has an allele that contributes to brown eye color (other genes also influence eye color in humans). After meiosis in the cells of this individual, what fraction of the nuclei will carry the allele that contributes to blue eyes? To brown eyes?arrow_forwardNeep help ASAP. A red flowered plant was crossed with a blue flowered plant and produced all purple flowered plants. When the purple flowered plants were crossed with each other they produced 5 red plants, 5 blue plants, 20 deep purple plants, 20 light lilac plants, and 30 purple plants How many genes are involved in the color production? Assume that red color is caused by an A allele and blue color by a B allele and determine the likely genotype of the plants in the F2 generation.arrow_forward
- Q1: Which chromosome contains the gene for cystic fibrosis? For Tay-Sachs disease? For sickle-cell disease? Q2: No known genetic disorders are encoded on the Y chromosome. Why do you think this is? Q3: In your own words, explain why most single-gene disorders are recessive rather than dominant.arrow_forwardVISUALIZE Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells: (a)How a pair of alleles for a single locus segregate in meiosis (b)How the alleles of two unlinked loci assort independently in meiosis (c)How the alleles of two linked loci undergo genetic recombinationarrow_forwardThe gene for flower position in pea plants exists as axial or terminal alleles. Given that axial is dominant to terminal, list all of the possible F1 and F2 genotypes and phenotypes from a cross involving parents that are homozygous for each trait. Express genotypes with conventional genetic abbreviations.arrow_forward
- Explain how the Chromosomal Theory of Inheritance helped to advance our understanding of genetics.arrow_forwardDescribe the process of mitotic recombination and explainhow it can produce a twin spot?arrow_forward1. Dihybrid crosses: In dogs, black coat color(B) is dominant to yellow coat fur (b), and straight fur (F) is dominant to curly fur (f). The coat color gene and the fur texture gene are on different chromosomes, so they assort independently, and are not sex linkied. Determine the ratio of having a yellow dog with straight hair if the parents are: BbFF x Bbff a. What are the phenotype of the parents? b. Complete a punnet square. List all the genotypes of the predicted offsprin of this mating c. Based on your Punnet sqaure, list all the genotypes for offspring that would yield a dog with yellow straigh hair d. Based on the punnet square, what is the predicted phenotypic ratio for those parents having a dog with black curly hair.arrow_forward
- 1. Construct pedigree charts using the inheritance of hemophilia in figure 92. This is X-linked inheritance so you are required to label XX for females and XY for males. The gene responsible for the trait is represented by the superscript which should be specified in the legend.arrow_forward3)Mendel found that crossing wrinkle-seeded (rr) plants with homozygous round-seeded(RR) plants produced only round-seeded plants. What genotype ratio and phenotyperatio can be expected from a cross between a wrinkle-seeded plant and a heterozygousplant for this characteristic?arrow_forwardQUANTITATIVE Recall that hemophilia is an X-linked recessive disease. If a woman with hemophilia had children with a man without hemophilia, what is the chance that their first child will have the disease? What is the chance that their first child will be a carrier?arrow_forward
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