Question number 3 3. Counting Barr BodiesHow many Barr Bodies would be present in cells of individuals with the following genotypes?XXe. XXYb. XYf. XXXXYc. XOd. XXXa.PART B: Problems - Use Punnett Squares for all crossesxH = normal dominant alleleXh= recessive allele (hemophilia)Y = Y chromosomeg. XXXXXh. XXXYYpe for a woman who is a carrier of hemophilia and a normal man.

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Description: Question number 3 3. Counting Barr BodiesHow many Barr Bodies would be present in cells of individuals with the following genotypes?XXe. XXYb. XYf. XXXXYc. XOd. XXXa.PART B: Problems - Use Punnett Squares for all crossesxH = normal dominant alleleXh=

Barr bodies are X chromosomes that are inactive in female mammalian cells. Barr bodies are named…

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3. Counting Barr Bodies How many Barr Bodies would be present in cells of individuals with the following genotypes? a. XX e. XXY b. XY f. XXXXY хо d. XXX C. g. XXXXX h. XXXYY

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 3TYK

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Choose the statement that is incorrect. a. A son can inherit a recessive allele on an X chromosome from either parent. b. An individual may inherit three or more of each type of chromosome characteristic or the species, a condition called polyploidy. c. A female child inherits one X chromosome from her mother and one from her father. d. Pedigree analysis can be used to determine a future childs chance of being born with achcondroplasia.
A testcross is a way to determine ________. a. phenotype b. genotype c. dominance
Imagine you are performing a cross involving seed color in garden pea plants. What Fi offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green. 100 percent yellow-green seeds 100 percent yellow seeds 50 percent yellow, 50 percent green seeds 25 percent green, 75 percent yellow seeds
2.In dogs, there is a hereditary deafness caused by a recessive allele, d. A kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, but the owner is unsure of the genotype. She does a testcross (crosses it to a homozygous recessive dog), and two of the five offspring are deaf. This means that the male dog A.has the genotype DD B.has the genotype Dd C.is still of unknown genotype since there were offspring of both deaf and hearing phenotypes. D.has the genotype dd
3. State the Mendelian laws. These laws are applied in making genetic crosses. Which type of genetic cross can illustrate these laws? Give specific example.
3) How are you able to determine the genotype of a parent if you only know the phenotype of both parents and the offspring? Give an example. 4) What is the purpose of crossing a true breeding dominant organism with an organism expressing a dominant phenotype? What will you learn?
6. Consider that people with blue eyes must have two alleles for blue eyes since blue eye color is a recessive trait. A blue-eyed person and a brown-eyed person have an offspring with blue eyes. The brown-eyed person must A. have two alleles for blue eyes. B. have two alleles for brown eyes. C. not have the dominant brown eye allele. D, have one allele for blue eyes and one allele for brown eyes.
4) A testcross is used to determine which of the following? a) The phenotype of an individual with a dominant genotype b) The phenotype of an individual with a recessive genotype c)The genotype of an individual with a dominant phenotype d) The genotype of an individual with a recessive phenotype
2)If an individual that is homozygous dominant for a gene has offspring with an individual that is homozygous recessive for that gene, which genotypes are possible for their offspring? choose all that apply A)homozygous dominant B)heterozygous C)homozygous recessive D)more information would be needed
1. The frequency of a recessive disease is 9%. What is the frequency of the allele that causes s the disease? a) What is the frequency of the dominant allele? b) What is the frequency of the carriers (heterozygotes) of the disease?
3. A couple just had a baby, who has type-O blood. Upon learning the baby’s blood type, the father becomesinfuriated and accuses the mother of cheating on him. The mother has type-A blood and the father has type-Bblood. Knowing that the allele for type-O is recessive, answer the following questions.a. What is the relationship between the IA, IB, and i alleles?b. Is the father right? Or is he falsely accusing the mother? Explain. Include the genotypes of the parentsand the genotypes of their potential children.
2. Be able to compare and contrast (discuss similarities and differences in) in your own words the terms genotype and phenotype, wild-type and mutant phenotypes. Step by step.