in classical genetics what is the expected phenotypic ratio for progeny having a characterirstic such as plant height being controlled by a single gene? how about being controlled by two different genes?
Q: A parent pea plant with the genotype Ttrr produces offspring in which half are tal and round and…
A: The mendel did an experiment on pea plants over many years and he come up with 3 main laws : Law…
Q: A dihybrid cross is one in which two traits wi pairs of genes are studied at once. For exampl cross…
A: Mendel performed di-hybrid cross to study whether two alleles have any relation and how they pass on…
Q: Using Mendel’s lines of peas, describe how you would use a test cross experimental design to…
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A: punnet square is used to calculate the probability of the offspring from the gamates provides.…
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A: Genotype is the genetic make up of an individual that is produced according to the allele…
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A: Answer: POLYGENES = These are the group of genes responsible for expression of phenotypic traits in…
Q: Suppose you have an AAaa tetraploid plant and it undergoes self-fertilization. At least two copies…
A: The tetraploid plant is the plant having somatic cells with four chromosomes. Here the tetraploid…
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Q: Mention the advantages of selecting pea plant for experiment by Mendel.
A: Gregor Johann Mendel proposed principles of biological inheritance that has revolutionized the field…
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A: The ratios of visible traits are referred to as phenotypic ratios. The genotypic ratios are the…
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A: The objective of this question is to determine the phenotypic percentages for the expected offspring…
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A: Chi square is a statistical approach of finding out the null hypothesis is accepted or rejected for…
Q: In a genetic cross between a homozygous tall plant with homozygous purple flowers and a homozygous…
A: The cross is a representation of genotype on mating. The expected genotype of the child can be…
Q: You experiment with the genetics of height in a plant. You cross a homozygous tall (TT) plant with a…
A: We'll use punnet square to tell us about how the progeny will look like with complete dominance All…
Q: botanist carries out a cross pollination with two red poppies. In the result he obtained 75% red…
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Q: Discuss why Mendel's hybrid offspring begin to exhibit the original traits expressed by the P1…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: Let's say that you were a farmer and you have a field of peas of various genotypes. Pretend that you…
A: The genotype of an organism is the inherited DNA sequence that contains the information for making…
Q: A type of fast plant strain that can be used to study genetics is yellow green leaf in which the…
A: In Mendelian genetics, alleles can be of two forms: Homozygous alleles- The condition in which the…
Q: Mendel obtained his initial pea plant varieties from local breeders who were developing new…
A: Pure breeding means the homozygous for the allele. Lets consider that breeder were crossing the…
Q: A heterozygous plant with genotype Aa self-pollinates, and then its offspring also self-pollinate.…
A: An heterozygous plant with genotype Aa self pollinates. From this we are able to predict the two…
Q: A plant geneticist is examining the mode of inheritance of flower color in two closely related…
A: The objective of the question is to determine the mode of inheritance of flower color in two species…
Q: Assume independent assortment and start with a plantthat is dihybrid A/a ; B/b:a. What phenotypic…
A: The father of modern genetics is Gregor Mendel. He was a naturalist who gave a new view to the…
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A: A dominant allele is an allele which show its effect both in the homozygous and heterozygous…
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A: Introduction A gene is consisting of a pair of alleles/ factors and these alleles can be dominant…
Q: In Japanese four o'clock plants red (R) color is incompletely dominant over white (r) flowers, and…
A: Incomplete dominance is a condition in which an intermediate phenotype is developed. This is a…
Q: I II CII A.
A: Pedigree is a genetic representation of a family tree which depicts inheritance of traits / diseases…
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A: Epistasis refers to the interaction between the two genes.
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A: A test cross is defined as an experimental cross of an organism with a dominant phenotype whose…
Q: The gene for lengths of stem in a garden pea plant results in either tall or short stems, with tall…
A: Tall plant (TT) = dominant trait. Short plant (tt) =recessive trait
Q: Suppose you have an AAaa tetraploid plant and it undergo self- fertilization. At least two copies of…
A: The tetraploid plant is the plant having somatic cells with four chromosomes. Here the tetraploid…
Q: Let R = Red flowers and r = white flowers, and T = tall plants and t short plants. If the uppercase…
A: rrTt= pink flowers, tall. This is the case of incomplete dominance. The character of tallness is…
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A: Inheritance is the process by which the parental characteristics are passed on to the offsprings.…
Q: Why was Mendel’s success dependent on his studying characteristics that exhibit only two easily…
A: Gregor Johann Mendel is known as the father of genetics as he discovered the fundamental laws of…
Q: Use the following information to answer the next question. A Venn Diagram Showing the Relationship…
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in classical genetics what is the expected
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- You experiment with the genetics of height in a plant. You cross a homozygous tall (TT) plant with a homozygous short (tt) plant. Describe what the genotype and phenotype of the F1 progeny would look like if the plants exhibited complete dominance. Now describe the expected results if the trait exhibited incomplete dominance. What about the F2 progeny, assuming you crossed the F1 progeny with each other?A type of fast plant strain that can be used to study genetics is yellow green leaf in which the homozygous recessive plant will have pale yellow-green leaves. Predict the F1 generation phenotype of a cross between a dwarf rosette plant and a pale yellow green plant. short and green short and yellow-green tall and yellow-green tall and greenThe text outlines some of the problems Frederick William I encountered in his attempt to breed tall Potsdam Guards. a. Why were the results he obtained so different from those obtained by Mendel with short and tall pea plants? b. Why were most of the children shorter than their tall parents?
- Use a Punnett square to predict the offspring in a cross between a dwarf pea plant (homozygous recessive) and a tall pea plant (heterozygous). What is the phenotypic ratio of the offspring?Describe one of the reasons that made the garden pea an excellent choice of model system for studying inheritance.Pedigree Analysis Is a Basic Method in Human Genetics Using the pedigree provided, answer the following questions. a. Is the proband male or female? b. Is the grandfather of the proband affected? c. How many siblings does the proband have, and where is he or she in the birth order?
- 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. If Sarah carries the mutant cancer allele and Adam carries the mutant heart disease allele, what is the chance that they would have a child who is free of both diseases? Are these good odds?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?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?
- The gene for lengths of stem in a garden pea plant results in either tall or short stems, with tall being the dominant trait. Pretend you are a geneticist and, for the purpose of an investigation, you would like to determine if a tall pea plant is homozygous dominant or heterozygous. Explain your reasoning using Punnett squares. Be sure to give the expected results of each Punnett Square you draw.Using Mendel’s lines of peas, describe how you would use a test cross experimental design to determine the genotype of a pea plant with purple flowers. Be very specific in describing your experimental design and how you would interpret your results based on the proportion of offspring phenotypes. Make sure to include all possible offspring phenotypes in your answer and what the proportion of phenotypes tells you about the purple plant genotype.Use the following information to answer the next question. A Venn Diagram Showing the Relationship Between Oogenesis and Spermatogeneis. Oogenesis 1 NOTE: Similarities are represented by area 2. Differences are represented by areas 1 or 3. Match the numbered regions with the descriptions below. Spermatogenesis 3 Four viable gametes produced: Occurs in gonads: Daughter cells equal in size Unequal cytoplasmic division ▶
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