Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Chapter 9, Problem 12TYK
Why do more men than women have colorblindness?
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Why is inheritance of eye color more complex than just having either blue or brown eyes?
Why do unrelated children with a disorder such as Down syndrome resemble each other more closely than they do their siblings?
2) Jane's mom is colorblind, Jane has normal vision. Jane
marries Jack who is colorblind (and is male!), what's the
probability of Jack and Jane having a colorblind child
(regardless of the child's sex)?
3) Explain how a colorblind male can pass colorblindness
to his grandsons.
Chapter 9 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 9 - Connecting the Concepts 1. Complete this concept...Ch. 9 - Whether an allele is dominant or recessive depends...Ch. 9 - Edward was found to be heterozygous (Ss) for...Ch. 9 - Two fruit flies with eyes of the usual red color...Ch. 9 - A man with type B blood and a woman who has type A...Ch. 9 - Tim and Jan both have freckles (see Module 9.9),...Ch. 9 - Both Tim and Jan (problem 6) have a widows peak...Ch. 9 - In rabbits, black hair depends on a dominant...Ch. 9 - A fruit fly with a gray body and red eyes...Ch. 9 - A series of matings shows that the recombination...
Ch. 9 - A couple are both phenotypically normal, but their...Ch. 9 - Why do more men than women have colorblindness?Ch. 9 - In fruit flies, the genes for wing shape and body...Ch. 9 - Adult height in humans is at least partially...Ch. 9 - Heather was surprised to discover she suffered...Ch. 9 - In 1981, a stray black cat with unusual rounded,...Ch. 9 - SCIENTIFIC THINKING The breakthrough that led...
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- Write about white privilege and colorism with description of examle?arrow_forwardWhat does the punnet square look like for a colorblind man who marries a normal-vision woman?arrow_forwardA young boy is colorblind. His one brother and five sisters arenot. The boy has three maternal uncles and four maternal aunts.None of his uncles's children or grandchildren are colorblind. Oneof the maternal aunts married a colorblind man, and half of herchildren, both male and female, are colorblind. The other auntsmarried men who have normal color vision. All their daughters havenormal color vision, but half of their sons are colorblind.1. Which of the boy's four grandparents transmittied the gene forcolorblindness?2. Are any of the boy's aunts and uncles colorblind?3. Are either of the boy's parent colorblind?arrow_forward
- Why is the frequency of red green colour blindness is many times higher in males than that in the females?arrow_forwardAre all forms of Down syndrome due to non-disjunction?YES or NO?arrow_forwardWhy do unrelated children with a disorder such as Down syndrome resemble each other more closely than they do their siblings?arrow_forward
- Which of the following genetic disorders is described by the following: Recessive sex-linked disorder. More common in males. Results in the inability to distinguish some colors. Male-pattern baldness Cystic fibrosis albinism colorblindnessarrow_forwardJoe is color blind. Both his mother and his father have normal vision, but his mother’s father (Joe’s maternal grandfather) is color blind. All Joe’s other grandparents have normal color vision. Joe has three sisters— Patty, Betsy, and Lora—all with normal color vision. Joe’s oldest sister, Patty, is married to a man with normal color vision; they have two children, a 9-year-old color-blind boy and a 4-year-old girl with normal color vision. Q. If Joe marries a woman who is a carrier of the color-blind allele, what is the probability that their first child will be a color-blind boy?arrow_forwardJoe is color blind. Both his mother and his father have normal vision, but his mother’s father (Joe’s maternal grandfather) is color blind. All Joe’s other grandparents have normal color vision. Joe has three sisters— Patty, Betsy, and Lora—all with normal color vision. Joe’s oldest sister, Patty, is married to a man with normal color vision; they have two children, a 9-year-old color-blind boy and a 4-year-old girl with normal color vision. Q. Using standard symbols and labels, draw a pedigree of Joe’s family.arrow_forward
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