Genetics Branches Overview
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Questions and Answers

What phenomenon can result in offspring that produce a higher yield than their true-breeding parents?

  • Complete dominance
  • Sex-limited trait
  • Multiple alleles
  • Epistasis (correct)
  • How is epistasis different from complete dominance?

  • Epistasis involves interactions between alleles of the same gene, while complete dominance involves interactions between alleles of different genes.
  • Epistasis only occurs in dihybrid crosses, while complete dominance can occur in any type of genetic cross.
  • Epistasis results in the expression of one gene masking the expression of another, while complete dominance does not involve masking.
  • Epistasis involves interactions between alleles of different genes, while complete dominance involves interactions between alleles of the same gene. (correct)
  • In genetics, what is the term used for the presence of more than two alleles of a gene in a population?

  • Codominance
  • Polygenic inheritance
  • Pleiotropy
  • Multiple alleles (correct)
  • What type of trait is expressed only in one sex, regardless of whether it is X-linked or not?

    <p>Sex-limited trait</p> Signup and view all the answers

    Which genetic phenomenon involves one gene interfering with the expression of another gene?

    <p>Epistasis</p> Signup and view all the answers

    What does it mean when a heterozygote can express a phenotype that is more extreme than either parent?

    <p>Epistasis</p> Signup and view all the answers

    What is the main focus of Population Genetics?

    <p>Studying gene frequencies and allele changes</p> Signup and view all the answers

    Which field of genetics is primarily concerned with the function of enzymes in metabolic pathways?

    <p>Biochemical Genetics</p> Signup and view all the answers

    How does Evolutionary Genetics contribute to genetic studies?

    <p>By exploring genetic variation for speciation</p> Signup and view all the answers

    Which application area of genetics involves the improvement of crops through selective breeding?

    <p>Plant, Animal, and Microbial Improvement</p> Signup and view all the answers

    In the context of genetics, what is the primary purpose of genetic counseling?

    <p>Identifying diseases with genetic bases for treatment</p> Signup and view all the answers

    How does Behavioral Genetics differ from other branches of genetics mentioned?

    <p>By studying how genes influence behavior</p> Signup and view all the answers

    Who is often referred to as the 'Father of Genetics'?

    <p>Gregor Mendel</p> Signup and view all the answers

    Which scientist proposed the theory of Pangenesis regarding the formation of semen?

    <p>Aristotle</p> Signup and view all the answers

    Who put forward the Theory of Inheritance of Acquired Characteristics as a fundamental mechanism of evolutionary change?

    <p>Jean Baptiste de Lamarck</p> Signup and view all the answers

    Which group of scientists duplicated Mendel's experiments on various plants like garden peas, maize, and primroses?

    <p>Gregor Mendel, Erick Von Tschermak and Hugo de Vries</p> Signup and view all the answers

    Who demonstrated that Mendel's principles also applied to animals in 1902?

    <p>William Bateson, Saunders and Cuenot</p> Signup and view all the answers

    What is the core focus of Genetics as a branch of biology?

    <p>Understanding molecular and physical bases of biological diversity</p> Signup and view all the answers

    Who confirmed the Chromosome Theory of Inheritance by discovering the sex chromosomes and demonstrating the association between specific genes and specific chromosomes?

    <p>Thomas Hunt Morgan</p> Signup and view all the answers

    What did Sutton and Boveri suggest in 1902 regarding the association of Mendelian factors with chromosomes?

    <p>There are resemblances in behavior between Mendelian factors and chromosomes</p> Signup and view all the answers

    Who identified DNA as the hereditary material in 1944?

    <p>Maclyn McCarty</p> Signup and view all the answers

    What does Cytogenetics study?

    <p>The chromosomes</p> Signup and view all the answers

    Which branch of genetics focuses on how genes control the growth and development of an organism throughout its life-cycle?

    <p>Developmental Genetics</p> Signup and view all the answers

    What does Quantitative Genetics study?

    <p>Traits controlled by many genes and affected by the environment</p> Signup and view all the answers

    What term is used to refer to phenotypic traits that vary in degree due to the influence of two or more genes and the environment?

    <p>Multiple alleles</p> Signup and view all the answers

    Which type of genetic trait displays contrasting phenotypes based on the sex of the individual?

    <p>X-linked traits</p> Signup and view all the answers

    In what way do autosomal genes contribute to the phenotypic expression of males and females?

    <p>By influencing gene expression based on hormonal constitution</p> Signup and view all the answers

    What characteristic distinguishes multiple alleles from other types of genetic traits?

    <p>They vary in degree due to two or more genes and the environment</p> Signup and view all the answers

    Which type of trait is typically measured on a continuous scale or spectrum?

    <p>Polygenic traits</p> Signup and view all the answers

    What aspect influences the phenotypic expression of an organism besides genetic factors?

    <p>Environmental conditions</p> Signup and view all the answers

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