Concept explainers
To review:
The additional cross that might help in determining whether the Mendel’s model is valid for genes of horse and provide an explanation for the experimental cross performed along with the phenotypic frequencies that might be obtained from it. Further, explain the rationale behind the why the proposed cross model will provide the test of the model proposed by Mendel with respect to blending-inheritance.
Introduction:
According to the blending inheritance theory, the progeny of the parents produce offspring with the average characteristic of the parents. However, in contrast to this, Mendel proposed the particulate hypothesis of inheritance, on the basis of which the traits are inherited in discrete form. According to Mendel theory, the genetic integrity of the parents is always maintained. A particular researcher did not believe the hypothesis proposed by Mendel as when he crosses a chestnut horse (reddish-brown) with a cremello (very light-colored) horse, he always obtained an intermediate color horse, palmino (golden-yellow).
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Biological Science (6th Edition)
- SUBJECT: GENETICS Topic: Binomial Probability Consider albinism a trait to occur in a human family. If two parents are heterozygous for such trait, the probability of having a normally pigmented child is 3//4 and having an albino child is ¼. What is the probability that 2 will be normal and 1 will be albino?arrow_forwardMendel’s experiments relied on VERY specific properties of pea plants in order to achieve the results. I) What were the properties of his pea plants that made them conducive to his experiments and ii) with what organism do you think we could recreate his experiments that is not a pea plant (what other model organism might work to study what Mendel did)?arrow_forwardin a summary use your understanding of molecular biology to explain that recessive alleles are expressed through transcription and translation, and that they may have functional gene products. Describe how the interaction of the products produced by each allele results in what we see as dominant or recessive traits.arrow_forward
- Single gene Mendelian inheritance patterns: if you are told the phenotype of the parents and whether the trait is dominant or recessive etc, be able to predict the genotype of the children. If you are told the phenotype of the parent as well as the inheritance pattern, be able to predict the parent’s genotype. Be able to set up and use a Punnett square to solve problems and make predictions. Be able to explain the major steps in how information from our genes is used to make proteins. Or to show it in a labeled diagram. Be able to explain whatis transcription, translation. Where in the cell do these processes occur? In what order? What type of molecules are being made [DNA, RNA, protein]? What are their building blocks? What is a mutation? How can a mutation in DNA cause a change in a protein? (use the following terms to answer: codon, transcription, translation, mRNA). What is gene expression? Why is regulation of gene expression important for normal…arrow_forwardWhile traits Mendel worked with all adhered to his principles of inheritance, this is not the norm because phenotypes are typically a combination of both genetic and what other kind of influence? A. nature B. nurture C. environmental D. both nurture and environmentalarrow_forwardPart 1 - With use of Punnett diagrams discuss how the results of experiments carried out by Austrian monk Gregor Mendel on pea plants brought about the Law of Dominance, the Law of Segregation, and the Law of Independent assortment. Part 2 - In humans, the gene that produces the disease Sickle Cell Anaemia is recessive to the gene for healthy haemoglobin production. a) How can two phenotypically healthy parents have a child who suffers from Sickle cell Anaemia? In your answer use suitable letters to show the genotypes of the parents and construct a Punnett diagram to show all the possibilities of the children's genotypes. b) Based on the outcome of your Punnett diagram, state and explain the probability of a child being a sufferer of Sickle Cell Anaemia and the probability of a child not suffering from the disease. c) If an individual who suffers from Sickle cell disease has a child with someone who is healthy (and not carrying the sickle cell gene), what is the probability that…arrow_forward
- Who was Gregor Mendel? Describe the plant that he performed his research with and explain at least two reasons why this plant proved to be an ideal model species for early genetic research.arrow_forwardAccording to Mendel, if an individual is heterozygous for a gene, the phenotype will correspond to that of Group of answer choices the recessive trait alone a blend of the dominant and recessive traits the dominant trait alonearrow_forwardMendel, the father of genetics, was a careful researcher who studied the inheritance of certain traits in garden peas. Which of the following was NOT part of Mendel's research strategies? A.) He crossed true-breeding (self pollinating) pea plants. B.) He allowed eggs to be fertilized ONLY by self pollination. C.) He analyzed his data mathematically. B.) He controlled variables by studying 1 or 2 traits at a time.arrow_forward
- Mendel used the garden _ plant for his studies on inheritancearrow_forwardAccording to the video “The Biology of Skin Color”, why is it that the allele coding for darker skin did not evolve to protect us from skin cancer? A. Because skin cancer isn't harmful B. Darker skin did develop to protect us from skin cancer C. Because skin cancer usually develops after an individual's reproductive years, so it doesn't affect the ability for someone to pass on their genes D. Because skin cancer usually develops before an individual's reproductive years, so it doesn't affect the ability for someone to pass on their genesarrow_forwardIn Genetic Variation, If people have a similar genetic makeup, why do weu use DNA to understand or determine whether suspects are innocent or guilty of a crime.arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education