Campbell Essential Biology with Physiology 5th edition plus Student access code card
5th Edition
ISBN: 9781323244005
Author: Dicket, Hogan, Reece Eric J. Simon
Publisher: Pearson; 5 edition
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Chapter 9, Problem 12SQ
Summary Introduction
To explain: The Punnett square of a cross between Tim and Jan both of whom have freckles, but their first child Michael does not have freckles (dominant trait) and the probability of the occurrence of two more children will freckles from both of them.
Introduction: The cross of Tim and Jan was analyzed to study the transfer of the genetic trait freckles in children, which is a dominant trait in the
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Tim and Jan both have freckles, but their son Michael does not. Show with a Punnett square how this is possible. If Tim and Jan have another child, what is the probability that it will have freckles?
Mary and Dai both have freckles (a dominant trait). Their first child, Mariko, does not have freckles. Show using a Punnett square show how this is possible. If they have two more children who DO freckles (making for one without and two with) what is the probability that the NEXT child will NOT have freckles?
Duchenne muscular dystrophy is a sex-linked recessive disorder characterized by a progressive loss of muscle tissue. Neither Carla nor Rudy has Duchenne muscular dystrophy, but their first son does have it.
What can you say about Rudy's or Carla's genotype in relation with the disorder?
If the couple has a second child, what is the probability that he or she will also have the disease?
Show your answers with a Punnet square.
Chapter 9 Solutions
Campbell Essential Biology with Physiology 5th edition plus Student access code card
Ch. 9 - The genetic makeup of an organism is called its...Ch. 9 - Which of Mendels laws is represented by each...Ch. 9 - Prob. 3SQCh. 9 - Prob. 4SQCh. 9 - Prob. 5SQCh. 9 - Prob. 6SQCh. 9 - Prob. 7SQCh. 9 - Prob. 8SQCh. 9 - Prob. 9SQCh. 9 - Prob. 10SQ
Ch. 9 - Prob. 11SQCh. 9 - Prob. 12SQCh. 9 - Incomplete dominance is seen in the inheritance of...Ch. 9 - Why was Henry VIII wrong to blame his wives for...Ch. 9 - Prob. 15SQCh. 9 - Prob. 16SQCh. 9 - Prob. 17SQCh. 9 - Prob. 18IMTCh. 9 - Prob. 19IMTCh. 9 - Prob. 20IMTCh. 9 - Prob. 21PSCh. 9 - Prob. 22PSCh. 9 - Prob. 23BSCh. 9 - Gregor Mendel never saw a gene, yet he concluded...Ch. 9 - Prob. 25BS
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- A young couple went to see a genetic counselor because each had a sibling affected with cystic fibrosis. (Cystic fibrosis is a recessive disease and neither member of the couple nor any of their four parents is affected). What is the probability that the female of this couple is a carrier and what are the chances that their child will be affected with cystic fibrosis?arrow_forwardMark has an autosomal recessive condition called sickle cell anemia, a serious blood disorder that is associated with painful complications. His spouse has not experienced symptoms of sickle cell anemia but their first child developed the disease. What conclusions can be drawn about the mother's genotype and the probability of having a second child with the condition? Answer Choices: A: her genotype is heterozygous and there is a 25% percent chance of having another child with the disorder B: her genotype is heterozygous and there is a 50% percent chance of having another child with the disorder C: her genotype is heterozygous and there is a 75% percent chance of having another child with the disorder D: she lacks the allele for sickle cell anemia in that she lacks symptoms of the disease. There is a 0% percent chance of having another child with the disorderMark has an autosomal recessive condition called sickle cell anemia, a serious blood disorder that is associated with…arrow_forwardBryan has albinism, an autosomal recessive trait, which means he is homozygous recessive for albinism and his genotype is aa. Bryan's parents, Frank and Amy, do not have albinism however they must both be heterozygous. Bryan's sister, Allice, is a carrier for albinism. If Allice has offspring with Jim, who has no family history of albinism, what are the chances that their offspring are carriers for albinism? What are the chances that they children will get albinism? Use Punnett squares.arrow_forward
- If Scott Summers and Jean Grey have another daughter, what are the chances that she will has red eyes?arrow_forwardThe Eastwoods are going to have a child. She has chestnut hair (MBdMBk), and he has dark brown hair. Find their child's possible hair colors and the probabilities of each. (Enter exact numbers as integers, fractions, or decimals.) blond     strawberry blond     bright red     light brown     reddish brown     dark red     medium brown     chestnut     auburn     dark brown     shiny dark brown     glossy dark brown     black     shiny black     glossy blackarrow_forwardA couple seeks advice from a genetic counselor because they know that they are both carriers for cystic fibrosis (which is autosomal recessive), and the woman is a carrier for Duchenne muscular dystrophy (which is sex-linked recessive). For each of their future sons and daughters (calculate separately), what is the probability that they will be affected for: Cystic fibrosis Duchenne muscular dystrophyarrow_forward
- A couple has three children, all of whom have brown eyes and blond hair. Both parents are heterozygous for brown eyes (Bb), but one is blond (rr) and the other is a redhead (Rr). What is the probability that the next child will be a brown-eyed redhead?  For full credit, you must show all workarrow_forwardJan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have three children with the disease and then Jan becomes pregant with fratnernal twins, what is the probability that both twins will also have the disease?arrow_forwarda couple whose genotype for eye color is bb plans to have a child. What are the possible genotypes and phenotypes of the child in terms of eye color? Note that brown eyes (B) are dominant over blue eyes(b).arrow_forward
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