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 3.2A
Determine the results from a cross of a mother and a father who are both heterozygous for freckles.
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When Widow’s peak is dominant over straight hairline. What are the genotypic outcomes of a cross between an individual who is homozygous recessive and one who is heterozygous.
Find if this is homozygous or homozygous recessive ratios of the offspring of the following cross.
Bbaa x bbAa
Frank and Susan both have freckles but they're firstborn son Lawrence does not demonstrate the characteristics. What are the most likely genotype of Frank Susan and Lawrence?
Use the following parents to create a Punnet Square and answer the question. Cross a heterozygous father with a heterozygous mother. (You can use the legend A = normal pigmentation and a = albinism)
What will be the phenotypic ratio of the children?
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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- A woman homozygous dominant for albinism marries a man who is homozygous recessive for albinism. What are the possible genotypes and phenotypes percentages for their offspring?arrow_forwardHemophilia is an X-linked recessive gene. A normal woman who is a carrier for hemophilia marries a man with hemophilia. Draw a punnett square of a cross between these two individuals. What are the chances that this couple will have a daughter with hemophilia?arrow_forwardIn a disputed parentage case, the child is blood type O, while the mother is blood type A. What blood type would exclude a male from being the father? Would the other blood types prove that a particular male was the father?arrow_forward
- The 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_forwardIn a certain animal, black fur is dominant to white fur. Determine the possible offspring from crosses between:arrow_forwardIn a cross between fair skin, black hair (heterozygous for all these traits) with brown skin, red hair, what is the genotypic ratio of the offspring?arrow_forward
- In the following dihybrid cross: B/b; E/e x B/b; e/e What are the phenotypes of the offspring? 9/16 Black 3/16 brown 4/16 golden 9/16 Brown 3/16 Black 4/16 golden 9/16 Black 3/16 golden 4/16 brown 3/8 Black 1/8 brown 4/8 golden 3/8 golden 4/8 Black 1/8 brownarrow_forwardAssume that genes A and B are on two different chromosomes. Describe Mendel’s Law of Independent Assortment by using an individual with the genotype AaBb as an example.arrow_forwardMr. Frosty is a heterozygous 3-snowballed snowman with a button nose (Bbnn) and Mrs Frosty is a short, 2-snowballed snowperson with a homozygous carrot nose (bbNN). Fill in the dihybrid cross beloy to show the probabilities of their offspring.arrow_forward
- A man crosses two pink-flowered four o’clock and obtains seeds which grow into plants bearing the following flower colors: 24 red, 53 pink, and 26 white. From these results, indicate how these colors are inherited and show a diagram of the cross.arrow_forwardIn a cross between two, dihybrid, heterozygous individuals, what fraction of the offspring will be dominant for only the (A) gene?arrow_forwardHemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have a son with hemophilia. They would like to have one more child. What is the probability of having a child without hemophilia? Explain using a Punnett square. Is it possible for a girl to be born with hemophilia? Explain.arrow_forward
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