3. Albinism is a recessive trait. Determine the genotypes of the parents and offspring. a. A normal father and an albino mother have eight children, four normal (2 male & 2 female) and four albino ((2 male & 2 female) b. A normal father and an albino mother have eight children which are all normal (4 male & 4 female) c. Construct a pedigree of the families in (a) and (b). Assume that one of the normal children in (b) and one of the albino children in (a) become the parents of eight children (4 male & 4 female). Extend the pedigree to include them, predicting their phenotypes (normal or albino). ● Use "A" for the allele associated with the dominant phenotype, and lowercase "a" for the allele associated with the recessive phenotype.

3. Albinism is a recessive trait. Determine the genotypes of the parents and offspring. a. A normal father and an albino mother have eight children, four normal (2 male & 2 female) and four albino ((2 male & 2 female) b. A normal father and an albino mother have eight children which are all normal (4 male & 4 female) c. Construct a pedigree of the families in (a) and (b). Assume that one of the normal children in (b) and one of the albino children in (a) become the parents of eight children (4 male & 4 female). Extend the pedigree to include them, predicting their phenotypes (normal or albino). ● Use "A" for the allele associated with the dominant phenotype, and lowercase "a" for the allele associated with the recessive phenotype.

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Description: 3. Albinism is a recessive trait. Determine the genotypes of the parents and offspring.a. A normal father and an albino mother have eight children, four normal (2 male & 2 female)and four albino ((2 male & 2 female)b. A normal father and an albino m

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter16: Human Genetics And The Human Genome

Section: Chapter Questions

Problem 10TYU: Examine the following pedigrees. Which is the most likely mode of inheritance of each disorder? (a)...

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1. An albino man whose parents are both normal marries a woman one of whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a. Is albinism a dominant or a recessive trait? Explain your answer. b. Give the genotypes of all the persons involved. c.The couple plans to have more kids. What is the probability of their second child being normal?
1. An albino man whose parents are both normal marries a woman one whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a. Is albinism a dominant or a recessive trait? Explain your answer. b.Give genotypes of all the persons involved. c. The couple plans to have more kids. What is the probability of their second child being normal?
1. An albino man whose parents are both normal marries a woman ome of whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a.Is albinism a dominant or a recessive trait? Explain your answer B. Give genotypes of all the persons involved. C.The couple plans to have more kids. What is the probability of their second child being normal
1. A woman is colorblind. Construct a Punnett square and using versions of the letter “C” determine if she marries a man with normal vision: What are the chances her sons will be colorblind? What are the chances her daughters will be colorblind? What are the chances of having a carrier daughter? 2. Both the husband and wife have normal vision. Their son is colorblind. What can you conclude about the father’s genotype? What about the mother’s genotype? Father: Mother: 3. If a young girl has fragile X syndrome, a recessive trait (f), what is her genotype? What are the possible genotypes of her father and mother? Mother: _________ or __________ Father: _________________ If her brother also developed this condition, which parent (father, mother, or both) contributed a disease allele? Explain your answer as well as constructing Punnett squares to support your answer. 4. Both the mother and father of a hemophiliac son have normal blood clotting. What are the genotypes of the…
4. Analyzing: A. Analyze the pedigree below and determine if the trait is inherited as autosomal dominant, autosomal recessive, X-linked dominant, X-linked recessive, or Y-linked. Remember, data from human families is limited, so you may be unable to determine the inheritance with certainty. The key is that you justify your answer using data from the pedigree. 5 6 2 7 11 14 8 12 15 9 13 4 10 B. Two family members (individual four and individual 12) decide to undergo genetic counseling and testing for the disease. • Genetic testing shows that individual 4 has only nonmutant allele(s) • Genetic testing also indicates that individual 12 has only mutant allele(s) Does this information change your assessment of the inheritance of the disease? If so, explain why; if not, explain why not.
4. Consider the characteristics and pedigree of a couple: Woman: has normal vision but mother is color blind has normal blood clotting but father is hemophiliac not bald but both parents are bald Man: father is colorblind but mother has normal vision both parents have normal blood but the brother is hemophiliac bald but both parents are not bald. a) Give the genotypes of the following: i. ii. man i. woman's mother and father iv. man's mother and father woman
A. Identify the inheritance pattern in the pedigree below (dominant, recessive or sex-linked). B. What are the genotypes for individuals Il- 1 and Ill-2? Use alleles A and/or a for your answer. 4 II 10 IV
II. Identify the possible blood types of the offspring. Find the following: a. Punnett Square b. Genotypes of the offspring c. Phenotypes of the offspring d. % A e. % AB f. %B g. % 0 1. Father is A and mother is homozygous B 2. Father is type O and mother is type AB 3. Father is heterozygous type A and mother is homozygous type A
9. The pedigree below shows the occurrence of Becker muscular dystrophy in a family. Becker muscular dystrophy causes muscle weakness. Key Becker Normal muscular dystrophy Male Female 899 Based on this pedigree, which of the following best describes the inheritance pattern for Becker muscular dystrophy? A. Polygenic trait B. Codominant trait C. Sex-linked recessive trait D. Autosomal dominant trait
2. You cross a pure-breeding red guinea pig with short hair and a pure-breeding white guinea pig with long hair. Allof the offspring are long hair and cream colored.a. What type of inheritance is hair length? Hair color? How do you know?b. What are the genotypes of the parents?c. Determine the genotypes and phenotypes and how many are expected for the F2 generation. (Just leaveyour answers as a list with numbers beside them. No ratios required.)
8. Huntington’s disease is a degenerative disease of the nervous system that strikes in middle age. The allele that causes the disease (H) is dominant to the allele that results in the normal condition (h). Answer the following questions about the inheritance of this disease. A. What is the genotype of a man who is normal but whose father had Huntington’s disease? B. What is the genotype of a woman who has Huntington’s disease if both of her parents had Huntington’s disease? C. If a man who is heterozygous for Huntington’s disease marries a woman who is normal, what would you expect for the genotypes and phenotypes of their children? D. If a normal man marries a woman who is homozygous for Huntington’s disease, what do you expect for the genotypes and phenotypes of their children?
3. Short-tailed pup distribution. In mice, the dominant T allele results in a short tail. Homozygous T/T genotype is lethal, which means mouse embryos with this genotype die before they are born. Homozygous t/t is normal, with normal tail. A cross between two short-tailed mice produces a litter of 5 pups. a). What are the genotype(s) of the two short-tailed mice used in the cross? b). What are the possible genotypes and phenotypes of the 5 pups? What are their perspective ratio?