Answered: How can Mendel's postulates of…

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How can Mendel's postulates of segregation and independent assortment be explained by meiosis?

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter19: Introduction To Genetics

Section: Chapter Questions

Problem 4RQ: What is independent assortment? Does independent assortment occur during mitosis or during meiosis?

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How did Mendel use evidence from monohybrid and dihybrid crosses to deduce his laws of segregation and independent assortment? How do these laws relate to meiosis?
In his famous paper, Mendel writes that he set out to“determine the number of different forms in whichhybrid progeny appear” and to “ascertain their numericalinterrelationships.” How did his close attention tonumbers lead him to discover segregation and independentassortment?
Describe the Principles of Segregation and Independent Assortment in terms of Genetics. How do these Principles express during Meiosis?
When Gregor Mendel was working in the mid 1800s, scientists had not yet discovered chromosomes or meiosis. However, we now understand how Mendel's principles are rooted in the events of meiosis. As an example of this, state Mendel's principle of independent assortment and explain how it relates to independent assortment in meiosis.
(a) During which division of meiosis do Mendel's rules of Segregation and Independent assortment аpply? (b) The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd. Assuming independent assortment of these 4 genes what are the probabilities that F2 offspring will have the following genotypes? (i) AABBCCDD (ii) AaBBccDd (c) If the quantity of DNA in a cell at G1 of the cell cycle is 5 picograms (pg); what will the quantity of DNA in that cell be at G2 phase of the cell cycle? Give reason
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Part 3: Use homologous chromosomes marked with alleles “A” and “a” and a second pair of homologs marked with alleles “B” and “b”. to demonstrate Mendel’s Principle of Independent Assortment in cells in Meiosis. Indicate what phase this happens in meiosis. Part 4: Use AaBb x AaBb and two Punnett squares to demonstrate Mendel’s Principle of Independent Assortment. Write the expected phenotypic ratios under each Punnett square. Now, multiply the probabilities of each event to get combined probabilities for BOTH genes. i.e. the chance of being homozygous recessive for both genes is 1/4 x 1/4 =1/16.
Which of the following behaviors of chromosomes explains Mendel's second law (law of independent assortment)?
What are the pertinent features of meiosis that provides a physical correlate to Mendel's abstract genetic law of random segregation and independent assortment
Single nucleotide polymorphisms do not show mendelian segregation through meiosis. Is this true or false? Please explain briefly why and answer the question as quickly as possible.
Mendel's Law of Independent Assortment states that: the members of a pair of homologous chromosemes assort independently of each other during gamete formation none of these the members of a pair of homologous chromosomes separate from each other during gamete formati different pairs of homologous chromosomes assort independently of each other during gamete formation different pairs of homologous chromosomes separate from each other during gamete formation
What are linked genes? What is the difference between tightly-linked and loosely-linked genes? How does loosely-linked versus tightly-linked affect the probably of segregation of genes during meiosis?