Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 13.4, Problem 2SB
Summary Introduction
To review:
Whether wiggly ears are autosomal recessive or sex-linked recessive trait.
Introduction:
When the genes are present on X-chromosomes, then it is known as X-linked trait. For example, the genes for colored eyes in Drosophila are present on X-chromosome and is hence called X-linked recessive trait. When the genes are present on autosomes, that is, chromosomes other than sex chromosomes, then it is known as autosomal trait. For example, malformed hands in humans is an autosomal trait. It can be passed to an offspring from both the parents. It will become an autosomal recessive trait when an individual has both recessive genes in an allelic pair.
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Chapter 13 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 13.1 - You want to determine whether genes a and b are...Ch. 13.2 - You have a true-breeding strain of...Ch. 13.3 - What mechanisms are responsible for: (a)...Ch. 13.4 - A man has Simpson syndrome, an addiction to a...Ch. 13.4 - Prob. 2SBCh. 13.5 - Prob. 1SBCh. 13 - In humans, redgreen color blindness is an X-linked...Ch. 13 - The following pedigree shows the pattern of...Ch. 13 - Individuals affected by a condition known as...Ch. 13 - A number of genes carried on the same chromosome...
Ch. 13 - Prob. 5TYKCh. 13 - Discuss Concepts Can a linkage map be made for a...Ch. 13 - In Drosophila, two genes, one for body color and...Ch. 13 - Another gene in Drosophila determines wing length....Ch. 13 - Prob. 9TYKCh. 13 - You conduct a cross in Drosophila that produces...Ch. 13 - Discuss Concepts Crossing-over does not occur...Ch. 13 - Prob. 12TYKCh. 13 - Prob. 13TYKCh. 13 - Prob. 14TYKCh. 13 - Prob. 1ITDCh. 13 - Prob. 2ITDCh. 13 - Prob. 3ITDCh. 13 - Prob. 4ITD
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- In humans, having freckles is dominant to not having freckles. What is the phenotype of a homozygous recessive?arrow_forwardA form of deafness is passed on in a large family in an autosomal recessive pattern. A woman in the family has two brothers with deafness. Neither of the woman's parents has hearing problems. What would be the probability of the woman to have the deafness allele?arrow_forwardAlbinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation and have one child out of three who is albino (without melanin pigmentation). What are the genotypes of the albino's parents? Both parents must be homozygous dominant. Both parents must be heterozygous. One parent must be homozygous dominant; the other parent must be heterozygous. One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. O O O O Oarrow_forward
- For sex-linked recessive traits, only females can be “carriers”, like how both Diana and Olivia are carriers for hemophilia. Why can’t males be carriers for these traits?arrow_forwardColor blindness is a recessive X-linked trait. A normal couple has a color-blind child. At least one member of the couple's families is colorblind, who is this most likely to be?arrow_forwardAlbinism is inherited through a recessive allele (a). Juan has normal skin color. His Mom and Dad also have normal skin color. Juan marries Paige, who also has normal skin color. Surprisingly, their first child is an albino. What is everyone's genotype?arrow_forward
- Tay Sachs disease is a recessive lethal. Abnormally shortened fingers are the heterozygous form of a dominant lethal. What phenotypes would you expect among teen-age children from parents who are heterozygous for both traits?..arrow_forwardAlbinism (lack of skin pigmentation) is caused by an autosomal recessive allele. A man and woman, both normally pigmented, have an albino child together. For this trait, what is the genotype of both parents? Options Below: homozygous recessive homozygous dominant heterozygous hemizygous unknown, because not enough information is providedarrow_forwardDoes X-linked recessive "fit" this pedigree? How about autosomal recessive? What about X-linked dominant? Autosomal dominant? yes This pedigree shows inheritance of a DOMINANT trait: Is it X-linked or autosomal? Why? Fill in everyone's genotype.arrow_forward
- Do the symbols A and a have anything to do with dominance and recessiveness?arrow_forwardArmin and Annie are going to have a baby. Annie has dimples in her cheeks (a dominant trait), while Armin does not. You know that Annie's father has dimples in both cheeks, while her mother does not. Her mother must have the recessive trait. Annie's father has the dominant trait, but you don’t know if he is a homozygote or heterozygote. But you still know what Annie’s genotype must be because Annie must have a recessive allele since that is all she could have inherited from her mother. Since Annie has a dimples you know she inherited a dominant allele from her father. What are the chances Armin and Annie’s baby will have dimples? Determine the Phenotype and Genotype and its probability. Show your solution in a clean sheet of paper.arrow_forwardYOUR SISTER DIED FROM TAY-SACHS DISEASE, INHERITED AS A RECESSIVE ALLELE (t). you're married and planning to start your family. you're worried about the disease and decide to have genetic testing to see if you or your spouse is a carrier of the tay-sachs allele. the test results show that you're a carrier of the allele, but your spouse isn't. what is the probability that you and your spouse will have a child with tay-sachs disease? show your work.arrow_forward
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