Solve for the genetic problems below. One point each for: a. genotype of the parents b. Punnett square c. genotypic ratio d. phenotypic ratio e. type of Mendelian or non-Mendelian principle
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- Phenotypic ratio Type A : Type O = 2:2 or 1:1 Let's Try This! I1. Solve for the genetic problems below. One point each for: a. genotype of the parents b. Punnett square C. genotypic ratio d. phenotypic ratio e. type of Mendelian or non-Mendelian principleI U ... B Work through the Punnett square problems completely on a separate sheet of paper. Take a picture of them and attach it to this form to return the assignment. 1. Mendel studied the colors of flowers in his experiments with pea plants. Purple is dominant over white. Let P stand for purple and p stand for white. Make a Punnett square for a cross between two heterozygous purple plants (Pp) and determine all of the probabilities of all phenotypes and genotypes. Page 1 of 1 234 words English (U.S.) Text Predictions: On 100% + Give Feedback to Micro search DELL F3 F4 F5 F6 F7 F8 F9 F10 F12 Home 近B What is the genotype ratio? What is the phenotype ratio? 3. What are the expected genotype and phenotype ratios in the following genetic conditions? Use scratch paper to do the Punnett square if needed but you do not need to draw it on the worksheet. a. Monohybrid cross between 2 heterozygous individuals (Aa x Aa) Genotype ratio: 1:2:1 Phenotype ratio: 3:1 G q 8:32 a b. Dihybrid cross between 2 heterozygous individuals (AaBb x AaBb) Genotype ratio: Phenotype ratio: 4. Both Mrs. Smith and Mrs. Jones had babies the same day in the same hospital. Mrs. Smith took home a baby girl, whom she named Sharon. Mrs. Jones took home a girl, whom she named Jane. Mrs. Jones began to suspect, however, that the child had been accidentally switched with Mrs. Smith baby in the nursery. Blood test were made; Mr. Smith was type A, Mrs. Smith was type B, Mr. Jones was type A, Mrs. Jones was type A. Sharon was type O, and Jane was type. B. Had a mix-up occurred? Use scratch paper, you do not need to…
- SEATWORK Symbols (for pea plant traits): • T: Tall t: short Analyze the following problems. Determine the possible genotypes, genotypic ratio, phenotypes, and phenotypic ratio from the genetic cross. Show your solution through a Punnett square. Use the symbols provided. • R: Round seeds r: wrinkled seeds • Y: Yellow seeds y: green seeds • P: Purple flower p: white flower 1) Cross a homozygous dominant tall and homozygous round seed pea plant with a heterozygous tall and heterozygous round seed pea plant. 2) Cross a pea plant that is heterozygous for purple flowers and homozygous dominant for yellow seeds with a pea plant that is heterozygous for purple flowers and homozygous recessive for green seeds. 3) Cross a pea plant that is short and has green seeds with a pea plant that is heterozygous tall and has heterozygous yellow seeds.1. define inheritance, genes, alleles, and other basic terms used in genetics. 2. execute the basic steps in solving genetics problems 3. demonstrate Mendelian laws of segregation and independent assortment 4. solve simple monohybrid and dihybrid crosses and apply probabilities in predicting the future generations of offspringSolve this problem using the rules of probability instead of Punnet squares, bifurcation forks, or mental visualization. Flower position, stem length, and seed shape were three of the traits that Mendel studied. Each is controlled by an independently assorting gene and has dominant and recessive expression as follows: • Axial inflorescence (flowers originate along the stems) is dominant over terminal (flowers on top of the stem). Long (“tall") stem is dominant over short stem (“dwarf"). • Round seed is dominant over wrinkled. Let's use the symbols Fa/fa for genes determining axial vs. terminal (fa from "false umbel," a type of inflorescence); Le/le for tall vs. dwarf (le is for length); R/r for round vs. wrinkled seeds (the Latin word rugosus means wrinkled). Notice that the phenotype "tall plant" may be conferred by the genotype Lele or Lele; this can be abbreviated as Le-, where the dash represents the alternative allele. The homozygous lele will show the recessive phenotype. Since…
- Direction: Solve the following problems using Mendelian principles of heredity. Show your complete solution. 1. Mr. Allan Cruz has a genotype of DdEeFf, where the D and E loci are on the large chromosome and the F locus is on the small chromosome. This cell was taken from an F1 organism that resulted from the cross of two true breeding parents of the following genotypes. Parent 1: DDeeFF and Parent 2: ddEEff Among the children of Mr.Cruz’s parents, what is the chance of having the same genotype as Allan?, Σ. K Q R. click "Turn In" on Google Classroom when you are done. 2. In pea plants, yellow seeds are dominant to green seeds. A heterozygous yellow-seeded pea plant (Yy) is crossed with a plant that has green seeds (yy). Yellow Seeds Y y Phenotype Probability (%) У Yellow Seeds: y Green Seeds: 4. In another one of Mendel's experiments. he crossed the offsprina. Two nea Hide sid US 12 Green Seeds 田Give two assumptions for the Mendelian Inheritance for Segregation and Independent Assortment experiments acceptable.
- b. What if a breeder were working with 7 different, independently segregating genes, as Mendel did? How many generations would it take him to have pure-breeding varieties, starting from an F1 hybrid that is heterozygous for all 7 genes? i. What is the probability that an individual in the F2 generation would be pure-breeding (i.e. is homozygous at all 7 loci)? [Hint: this is an “and” calculation since it must be homozygous at each of the 7 loci. ii. What is the probability that an individual in the F3 generation would be pure-breeding? iii. What is the probability that an individual in the F10 generation would be pure-breeding?Pedigree analysis is a fundamental tool for investigating whether or not a trait is following a Mendelian pattern of inheritance. It can also be used to help identify individuals within a family who may be at risk for the trait. Adam and Sarah, a young couple of Eastern European Jewish ancestry, went to a genetic counselor because they were planning a family and wanted to know what their chances were for having a child with a genetic condition. The genetic counselor took a detailed family history from both of them and discovered several traits in their respective families. Sarahs maternal family history is suggestive of an autosomal dominant pattern of cancer predisposition to breast and ovarian cancer because of the young ages at which her mother and grandmother were diagnosed with their cancers. If a mutant allele that predisposed to breast and ovarian cancer was inherited in Sarahs family, she, her sister, and any of her own future children could be at risk for inheriting this mutation. The counselor told her that genetic testing is available that may help determine if this mutant allele is present in her family members. Adams paternal family history has a very strong pattern of early onset heart disease. An autosomal dominant condition known as familial hypercholesterolemia may be responsible for the large number of deaths from heart disease. As with hereditary breast and ovarian cancer, genetic testing is available to see if Adam carries the mutant allele. Testing will give the couple more information about the chances that their children could inherit this mutation. Adam had a first cousin who died from Tay-Sachs disease (TSD), a fatal autosomal recessive condition most commonly found in people of Eastern European Jewish descent. Because TSD is a recessively inherited disorder, both of his cousins parents must have been heterozygous carriers of the mutant allele. If that is the case, Adams father could be a carrier as well. If Adams father carries the mutant TSD allele, it is possible that Adam inherited this mutation. Because Sarah is also of Eastern European Jewish ancestry, she could also be a carrier of the gene, even though no one in her family has been affected with TSD. If Adam and Sarah are both carriers, each of their children would have a 25% chance of being afflicted with TSD. A simple blood test performed on both Sarah and Adam could determine whether they are carriers of this mutation. Would you decide to have a child if the test results said that you carry the mutation for breast and ovarian cancer? The heart disease mutation? The TSD mutation? The heart disease and the mutant alleles?Pedigree analysis is a fundamental tool for investigating whether or not a trait is following a Mendelian pattern of inheritance. It can also be used to help identify individuals within a family who may be at risk for the trait. Adam and Sarah, a young couple of Eastern European Jewish ancestry, went to a genetic counselor because they were planning a family and wanted to know what their chances were for having a child with a genetic condition. The genetic counselor took a detailed family history from both of them and discovered several traits in their respective families. Sarahs maternal family history is suggestive of an autosomal dominant pattern of cancer predisposition to breast and ovarian cancer because of the young ages at which her mother and grandmother were diagnosed with their cancers. If a mutant allele that predisposed to breast and ovarian cancer was inherited in Sarahs family, she, her sister, and any of her own future children could be at risk for inheriting this mutation. The counselor told her that genetic testing is available that may help determine if this mutant allele is present in her family members. Adams paternal family history has a very strong pattern of early onset heart disease. An autosomal dominant condition known as familial hypercholesterolemia may be responsible for the large number of deaths from heart disease. As with hereditary breast and ovarian cancer, genetic testing is available to see if Adam carries the mutant allele. Testing will give the couple more information about the chances that their children could inherit this mutation. Adam had a first cousin who died from Tay-Sachs disease (TSD), a fatal autosomal recessive condition most commonly found in people of Eastern European Jewish descent. Because TSD is a recessively inherited disorder, both of his cousins parents must have been heterozygous carriers of the mutant allele. If that is the case, Adams father could be a carrier as well. If Adams father carries the mutant TSD allele, it is possible that Adam inherited this mutation. Because Sarah is also of Eastern European Jewish ancestry, she could also be a carrier of the gene, even though no one in her family has been affected with TSD. If Adam and Sarah are both carriers, each of their children would have a 25% chance of being afflicted with TSD. A simple blood test performed on both Sarah and Adam could determine whether they are carriers of this mutation. Would you want to know the results of the cancer, heart disease, and TSD tests if you were Sarah and Adam? Is it their responsibility as potential parents to gather this type of information before they decide to have a child?