how mispairing of homologous chromosomes could have led to the formation of a gene that codes for a protein that has 2 domains. Explain how two genes which were separate coding units became 1 gene with one coding unit. Why are the products of this cross over event called non-reciprocal cross over products?

how mispairing of homologous chromosomes could have led to the formation of a gene that codes for a protein that has 2 domains. Explain how two genes which were separate coding units became 1 gene with one coding unit. Why are the products of this cross over event called non-reciprocal cross over products?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 14QP: Variations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it...

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Homologous chromosomes can be either monads or dyads. Explain. How is it possible to have genetically identical twins that don’t look exactly alike?
Centromeres of a single homologous chromosome are pulled to opposite poles during
Diagram and describe how mispairing and crossing over between two different splitgenes could result in the production of genes with different combinations of exons.
Explain why the distance between two genes alonga chromosomeis associated whether they are linked or not linked with each other.
Illustrate the chromosomes with centromere placements at different distances along their length ?
Which statement about homologous chromosomes is FALSE? Select one: a. They contain the same genes in the same places along the length of the chromosome b. One member of the homologous pair came from your mother, the other from your father c. For a particular gene, one member of the pair may have one allele, while the other has a different allele d. They are joined together at the centromere as the two halves of the typical X-shaped chromosome
Explain why genes located on the same chromosome are said to be linked. Why do alleles of linked genes sometimes separate during meiosis?
(a) Explain the relationship between DNA, genes, and chromosomes during the passing of genetic information. (b) During the passing of genetic information from one generation to the next via chromosomes, nondisjunction can occur, interrupting the process. Describe the events that take place during nondisjunction.
Give at least three examples of types of mutationsthat would disrupt the process of mitotic chromosomesegregation
(a) A person with Down syndrome. She has 47 chromosomes rather than the common number of 46, because she has an extra copy of chromosome 21. (b) A wheat plant. Cultivated wheat is derived from the contributions of threewild species with two sets of chromosomes each, producing an organismwith six sets of chromosomes.Do these examples constitute variation in chromosomestructure or variation in chromosome number?
Determine the order of these genes on the chromosome.
a. List three (3) features to identify the structure of a chromosome. b. Based on the three features of a chromosome, elaborate on the chromosome groups.