Chapter 13

Last update by mayur on 03/27/2014
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Chromatids are separated from each other.

A) The statement is true for mitosis only.

B) The statement is true for meiosis I only.

C) The statement is true for meiosis II only.

D) The statement is true for mitosis and meiosis I.

E) The statement is true for mitosis and meiosis II.



Answer:

E) The statement is true for mitosis and meiosis II.



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  • feldman2009
    Answered in Chapter 13

    Independent assortment of chromosomes occurs. 

    A) The statement is true for mitosis only. 

    B) The statement is true for meiosis I only. 

    C) The statement is true for meiosis II only. 

    D) The statement is true for mitosis and meiosis I. 

    E) The statement is true for mitosis and meiosis II.

    B) The statement is true for meiosis I only. 



  • feldman2009
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    Which of the following occurs in meiosis but not in mitosis? 

    A) Chromosome replication 

    B) Synapsis of chromosomes 

    C) Production of daughter cells 

    D) Alignment of chromosomes at the equator

    E) Condensation of chromatin 



    B) Synapsis of chromosomes 



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    If an organism is diploid and a certain gene found in the organism has 18 known alleles (variants), then any given organism of thatspecies can/must have which of the following?

    A) At most, 2 alleles for that gene

    B) Up to 18 chromosomes with that gene

    C) Up to 18 genes for that trait

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  • feldman2009
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    Experiments with cohesions(protein that sister chromatids are held together by) have found that 

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    B) cohesions are cleaved from chromosomes at the centromere before anaphase I. 

    C) cohesionsare protected from cleavage at the centromere during meiosis I. 

    D) a protein cleaves cohesions before metaphase I. 

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  • feldman2009
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    A certain female's chromosomes 12 both have the blue gene and chromosomes 19 both have the long gene. As cells in her ovaries undergo meiosis, her resulting eggs (ova) may have which of the following? 

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    Chiasmata are what we see under a microscope that let us know which of the following is occurring? 

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  • feldman2009
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    For a species with a haploid number of 23 chromosomes, how many different combinations of maternal and paternal chromosomes are possible for the gametes? 

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    Independent assortment of chromosomes is a result of

    A) the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.

    B) the random nature of the fertilization of ova by sperm.

    C) the random distribution of the sister chromatids to the two daughter cells during anaphase II.

    D) the relatively small degree of homology shared by the X and Y chromosomes.

    E) All of the above



    A) the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.



  • feldman2009
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    When pairs of homologous chromosomes separate during anaphase I, 

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    C) recombination is not yet complete. 

    D) the synaptonemal complex is visible under the light microscope. 

    B) the sister chromatids remain attached to one another.