2. Dwarf tomatoes differ from the familiar tall type in having short, thick stems and deeper green, puckered, somewhat curled leaves. (This is an example of pleiotrophy.) The cross between pure breeding tall tomato plants and pure breeding dwarf tomato plants produces all tall plants. Which is the dominant allele? What would be the genotype and phenotype ratios? Dominant allele: Genotype: Phenotype:

2. Dwarf tomatoes differ from the familiar tall type in having short, thick stems and deeper green, puckered, somewhat curled leaves. (This is an example of pleiotrophy.) The cross between pure breeding tall tomato plants and pure breeding dwarf tomato plants produces all tall plants. Which is the dominant allele? What would be the genotype and phenotype ratios? Dominant allele: Genotype: Phenotype:

Name: 2. Dwarf tomatoes differ from the familiar tall type in having short,
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Description: 2. Dwarf tomatoes differ from the familiar tall type in having short, thick stems and deeper green, puckered,somewhat curled leaves. (This is an example of pleiotrophy.) The cross between pure breeding tall tomatoplants and pure breeding dwarf tomat

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 2TYK: In peas, the allele Le produces tall plants and the allele le produces dwarf plants. The Le allele...

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The dominant C allele of a gene that controls color in corn produces kernels with color; plants homozygous for a recessive c allele of this gene have colorless or white kernels. What kinds of gametes, and in what proportions, would be produced by the plants in the following crosses? What seed color, and in what proportions, would be expected in the offspring of the crosses? a. CCCc b. Cccc c. CcCc
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
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
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.
4)If an individual is bald, so you can't tell whether or not they have a widow's peak, but neither parent has a widow's peak, which genotypes are possible? a)Group of answer choices b)Homozygous recessive c)Homozygous dominant d)Heterozygous e)Unable to determine
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?
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?
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. 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?
4.) A man and a woman have a child. The father is blood type A, and one of his parents was blood type A and the other was blood type O. The mother is blood type B, and one of her parents was blood type B, the other type O. Both the father and the mother are carriers of the Bombay allele. (Neither of the type-O grandparents were type O because of the Bombay allele – they had the regular type O genotype.) WhataretheoddsthattheirbabywillhavebloodtypeO? WhataretheoddsthattheirbabywillhavebloodtypeAB? (Hint – for this question, you should draw out a pedigree and fill in as much as you can for the genotypes of BOTH genes that are involved.)
4. Marfan syndrome is a genetic trait caused by in a dominant allele. The trait causes a weakening of the aorta that can be fatal. A teenager whose mother has the syndrome (but whose maternal grandfather was not affected), and whose father was unaffected, is concerend that she may have the trait. a. What is the phenotype of each of her parents? Genotype? b. What is the chance that the teenager has Marfan syndrome?