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What occurs during pairing of chromosomes in prophase I of meiosis that increases genetic variability?()
选项：

A:further
condensation of chromosomes
B:genetic
recombination between homologous chromosomes
C:lots of
mutations
D:gene
duplication

发布时间：2024-06-24 11:28:19

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相关试题

1. During meiosis the homologous chromosomes separate and move to opposite poles at ( ). 选项： A:Prophase I ; B:Metaphase I ; C:Anaphase I ; D:Anaphase I ; E:AnaphaseⅡ
2.Which of the following is a major characteristic of meiosis I?选项： A:Splitting of the centromere; B:Pairing of homologous chromosomes; C:Reducing the amount of DNA to IN; D:Achieving the diploid number of chromosomes
3.Which of the following is a major characteristic of meiosis I?选项： A:Reducing the amount of DNA to IN; B:Achieving the diploid number of chromosomes; C:Pairing of homologous chromosomes; D:Producing primordial germ cells
4.Which of the followings would contain genetic material that is 100% identical? 选项： A、Homologous chromosomes B、Sister chromatids C、X and Y chromosomes D、Acrocentric chromosomes E、non-sister chromatids
5.Chromosomal chiasmata correspond to: 选项： A、Sites where chromosomes attach to the mitotic spindle B、Sites where recombination takes place between telomeres C、Sites where recombination takes place between centromeres D、Sites of initiation of DNA replication in pairs of homologous autosomal chromosomes E、Sites of recombination between pairs of chromosomes
6.When using plant tissue culture technology to breed plants, what is impossible is ( ) 选项： A、Gene recombination B、Gene mutation C、Segregation of character D、Segregation of homologous chromosomes
7.Which
of the following descriptions about prometaphase is CORRECT? () 选项： A、DNA are replicated. B、Microtubules attach to
kinetochore of chromosomes C、The mitotic bipolar is
decided D、Chromosomes are moved to
spindle equator
8.When using plant tissue culture technology to breed plants, what is impossible is ( )选项： A:Gene mutation B:Gene recombination C:Segregation of homologous chromosomes D:Segregation of character
9.Homologous pairs of chromosomes align opposite to each other at the equator of a cell during ________.（2.5）选项： A: metaphase of mitosis B: metaphase I of meiosis C: telophase II of meiosis D: metaphase II of meiosis

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What occurs during pairing of chromosomes in prophase I of meiosis that increases genetic variability?() 选项： A:furthercondensation of chromosomes B:geneticrecombination between homologous chromosomes C:lots ofmutations D:geneduplication

What occurs during pairing of chromosomes in prophase I of meiosis that increases genetic variability?()
选项：

A:further
condensation of chromosomes
B:genetic
recombination between homologous chromosomes
C:lots of
mutations
D:gene
duplication