Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Chapter 62, Problem 3.1CT
Assume that the genes for hairline and earlobes are on different pairs of homologous chromosomes. Determine the genotypes and
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Given a cross between
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Chapter 62 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 62 - The term _________ is used for a person possessing...Ch. 62 - The term _________ is used for the appearance of...Ch. 62 - The _________ is a genetic tool to simulate all...Ch. 62 - Prob. 4PLCh. 62 - Which of the following represents a dominant human...Ch. 62 - An attached earlobe is considered a recessive...Ch. 62 - A diploid chromosome number of 46 and a haploid...Ch. 62 - The possession of freckles is considered a...Ch. 62 - Single penny tossed 20 times and counting heads...Ch. 62 - Determine the results from a cross of a mother who...
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- In fruit flies, eye color is carried on the X chromosome. The allele for red eyes is dominant over its recessive allele, white eyes. -Cross a heterozygous female to a white-eyed male 1st Question to answer ---- How many genotypes are possible among the offspring? 2nd Question to answer ---- How many phenotypes are possible among the offspring? 3rd Question to answer ---- What is the probability of getting a red-eyed male? 4th Question to answer ---- What is the probability of getting a white-eyed male? 5th Question to answer ---- What is the probability of getting a red-eyed female? 6th Question to answer ---- What is the probability of getting a white-eyed female? 7th Question to answer ---- What is the probability of getting a red-eyed offspring? 8th Question to answer ---- What is the probability of getting a white-eyed offspring?arrow_forwardA karyotype shows that a child has Klinefelter syndrome (47,XXY). If the child is also colorblind (due to a recessive X-linked allele), despite his parents having normal color vision, in which parent and stage of meiosis did nondisjunction occur? And explain why .arrow_forwardA brown-eyed man with "hitchhiker's thumb" marries a brown-eyed woman with a straight thumb. If their first child has blue eyes and hitchhiker's thumb, what are the chances that their next child will have brown eyes? In the cross from question #1, what fraction of the couple's subsequent children would be expected to have straight thumbs?arrow_forward
- A couple who are about to get married learn from studying their family histories that, in both their families, theirunaffected grandparents had siblings with cystic fibrosis(a rare autosomal recessive disease).a. If the couple marries and has a child, what is theprobability that the child will have cystic fibrosis?b. If they have four children, what is the chance that thechildren will have the precise Mendelian ratio of 3:1 fornormal:cystic fibrosis?c. If their first child has cystic fibrosis, what is theprobability that their next three children will be normal?arrow_forwardThe cross between a female white giraffe and a pigmented male resulted in white offspring. What is the genotype of the father? Draw the test cross.arrow_forwardIn the same cross as question #1, what fraction of the offspring will have their father's genotype for both traits?arrow_forward
- Cystic fibrosis is a recessive human condition. A male with Cystic fibrosis and a woman with a dominant phenotype have sevral children, in which one displays Cystic fibrosis. What can you conclude about the genotype of the maternal parent and what is the probability that a child who does not display Cystic fibrosis is heterozygous?arrow_forwardA cross was made between a black male dog and two different white females. The first female gave birth to eight white pups, and the second female gave birth to two white and three black pups. What are the likely genotypes of the male parent and the two female parents?arrow_forwardConsider this cross in pea plants: Tt Rr yy Aa × Tt rr Yy Aa, whereT = tall, t = dwarf, R = round, r = wrinkled, Y = yellow, y = green,A = axial, a = terminal. What is the expected phenotypic outcomeof this cross? Have one group of students solve this problem bymaking one big Punnett square, and have another group solve it bymaking four single-gene Punnett squares and using the multiplication method. Time each other to see who gets done first.arrow_forward
- What genetic principle could be derived from a monohybrid cross?arrow_forwardThe given pedigree chart corresponds with generational cystic fibrosis. If individuals III-2 and III-3 were to have a second child, what is the probability that their second child will have cystic fibrosis? arrow_forwardConsider an individual with the AB/ab genotype, and assume that alleles of the A and B genes areunable to recombine during meiosis. If this individual is crossed with an individual who is homozygousrecessive at both genes (ab/ab), what is the expected phenotype ratio in the offspring?arrow_forward
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