Essentials of Biology (5th International Edition)
5th Edition
ISBN: 9781259660269
Author: Sylvia S. Mader, Dr., Michael Windelspecht
Publisher: Mcgraw-Hill
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Textbook Question
Chapter 10, Problem 3TC
Technology that can separate X-bearing and Y-bearing sperm offers prospective parents the opportunity to choose the sex of their child. First, the sperm are dosed with a DNA-staining chemical. Because the X chromosome has slightly more DNA than the Y chromosome, it takes up more dye. When a laser beam shines on the sperm, the X-bearing sperm shine more brightly than the Y-bearing sperm.
a. How might this technology be beneficial for couples that have a history of X-linked genetic disorders?
b. How might this technology be misused?
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Technology that can separate X-bearing and Y-bearing sperm offers prospective parents the opportunity to choose the sex of their child. First, the sperm are dosed with a DNA-staining chemical. Because the X chromosome has slightly more DNA than the Y chromosome, it takes up more dye. When a laser beam shines on the sperm, the X-bearing sperm shine more brightly than the Y-bearing sperm.a. How might this technology be beneficial for couples that have a history of X-linked genetic disorders?b. How might this technology be misused?
Draw a Punnett square. cross an XX woman with an XY man.
How many kinds of eggs can a woman produce in terms of their sex chromosomes?
How many kinds of sperm cells can men produce in terms of their sex chromosomes?
In any given fertilization event, what is the chance that a child will be XX? XY?
In any given fertilization event, what is the chance that a child will be male? Female?
A man with male pattern baldness, which is a recessive gene, marries a woman who is a carrier of this gene. What will be the possible genotypes and phenotypes of their children?
Chapter 10 Solutions
Essentials of Biology (5th International Edition)
Ch. 10.1 - Prob. 1LOCh. 10.1 - Prob. 2LOCh. 10.1 - Distinguish between dominant and recessive traits.Ch. 10.1 - Apply Mendel`s laws to solve and interpret...Ch. 10.1 - Recognize and explain the relationship between...Ch. 10.1 - Summarize what Mendel`s experiments explained...Ch. 10.1 - Compare the phenotypic and genotypic ratios of a...Ch. 10.1 - Solve the following (using Figure 10.6): What is...Ch. 10.1 - Prob. 4CYPCh. 10.1 - Prob. 1A
Ch. 10.1 - Prob. 2ACh. 10.1 - Prob. 3ACh. 10.1 - Prob. 4ACh. 10.2 - Prob. 1LOCh. 10.2 - Prob. 2LOCh. 10.2 - List some common genetic disorders, state the...Ch. 10.2 - Prob. 1CYPCh. 10.2 - Prob. 2CYPCh. 10.2 - Prob. 3CYPCh. 10.2 - Prob. 5ACh. 10.2 - Prob. 6ACh. 10.2 - Prob. 7ACh. 10.2 - Prob. 8ACh. 10.2 - Prob. 9ACh. 10.2 - Prob. 10ACh. 10.2 - Prob. 11ACh. 10.3 - Understand how incomplete dominance and...Ch. 10.3 - Prob. 2LOCh. 10.3 - Prob. 3LOCh. 10.3 - Prob. 4LOCh. 10.3 - Prob. 1CYPCh. 10.3 - Prob. 2CYPCh. 10.3 - Prob. 3CYPCh. 10.3 - Explain how gene linkage and gene interactions...Ch. 10.3 - Prob. 12ACh. 10.3 - Prob. 13ACh. 10.3 - Prob. 14ACh. 10.4 - Prob. 1LOCh. 10.4 - Prob. 2LOCh. 10.4 - Prob. 3LOCh. 10.4 - Prob. 1CYPCh. 10.4 - Prob. 2CYPCh. 10.4 - Prob. 3CYPCh. 10.4 - Prob. 15ACh. 10 - 1. How does the collection of chromosomes we...Ch. 10 - Prob. 2BYBCh. 10 - How does meiosis help predict the probability of...Ch. 10 - Prob. S3.2BYBCh. 10 - Prob. S8.2BYBCh. 10 - Prob. S9.2BYBCh. 10 - Prob. 1TCCh. 10 - Prob. 2TCCh. 10 - Technology that can separate X-bearing and...
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- Which gene on the Y chromosome triggers the development of male characteristics? What would happen if a male inherited a nonfunctional allele for this gene?arrow_forwardSuppose you are a carrier of fragile X syndrome and want to have children. Would you choose pregnancy, adoption, or surrogacy? If you became pregnant, would you opt for prenatal diagnosis? Explain your decisions.arrow_forwardAmy Alvarez had a recessive X-linked chromosome for a disorder such as, hemophilia, and said that she wanted to have all boys because they would not show symptoms? Would she be well informed?arrow_forward
- A husband and wife have normal vision, although both of the couple's fathers are red-green color-blind, an inherited X-linked recessive condition. What is the probability that the couple's first child will be a normal son? Enter your answer as a fraction or a whole number. Hint: Remember, humans determine sex via the XX = female, XY = male system. Think about the probability of having either a son or a daughter and the probability of having red - green color blindness.arrow_forwardWhat is the karyotype for men who have an extra Y chromosome? Discuss all the ways you can test for this abnormality.arrow_forwardThe sex of a newborn baby is determined by the chromosome inherited from: A) The Father B) The Mother C) The Father's Father D) Both A & Barrow_forward
- The percentage chance that the mother described above will give birth to a daughter with mid-digital hair and freckles is what percentage?arrow_forwardRead through the section on sex determination to answer the following scenarios. A person is born with XY chromosomes but physically and mentally presents as female until puberty. What biological factors play a role? A person with XX chromosomes are born with ambiguous genitals that resemble a penis, but they have internal ovaries. What biological factors could be involved? A person with XX chromosomes has a functional SRY gene on one of their X chromosomes. How would you expect them to develop? What role does birth order play in fetal development?arrow_forwardA woman with blonde hair and blues eyes, which are recessive genes, marries a heterozygous man who has brown hair and eyes. What are the possible genotypes and phenotypes of their children?arrow_forward
- A recently married couple are both heterozygous for cystic fibrosis, a recessive genetic disorder. They would like to start a family and would like to have two children. a.) What is the probability that their second pregnancy would result in a child with cystic fibrosis? b.) What is the probability that their second pregnancy would result in a child with cystic fibrosis?arrow_forwardSex determination of child is done by whose chromosome?arrow_forwardAssume that you are married and by chance upon submission for an amniocentesis prenatal checkup it resulted that your baby has more than the total number of chromosomes. What will your final decision to this finding?arrow_forward
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