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The random orientation of different pairs of homologous chromosomes on the metaphase plate is responsible for __________.


A) Random fertilization
B) Independent assortment
C) Crossing over
D) Asexual reproduction

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During which stage do chromosomes line up in pairs on the equatorial plane?


A) Metaphase I
B) Anaphase II
C) Metaphase II
D) Telophase I
E) Telophase II

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Bacteria reproduce by meiosis.

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Which of these is not a unique feature of meiosis?


A) Synapsis
B) Reduction division
C) Diploid daughter cells
D) Haploid daughter cells

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All of the following are sources of genetic variety except:


A) random fertilization
B) independent assortment
C) crossing over
D) synapsis

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Genetic recombination is possible because of ________ during or after meiosis.


A) independent assortment
B) crossing over
C) fertilization with a nonrelated gamete
D) All of these are correct.

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The purpose of meiosis I is:


A) to separate homologous chromosomes
B) to replicate chromosomes
C) to create 4 haploid cells
D) to separate sister chromatids
E) to repair errors in DNA synthesis

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Cells that will eventually undergo meiosis and produce gametes are often referred to as _______________ cells.

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The kinetochore holds the homologous chromosomes together.

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After meiosis I,_______ cells are formed and after meiosis II,_____ cells result.


A) 2,3
B) 4,4
C) 2,4
D) 4,8
E) 2,8

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Animals do which type of reproduction?


A) Sexual only
B) Asexual only
C) Sexual and asexual
D) Budding only
E) Binary fission

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When nonsister chromatids exchange segments during meiosis,the process is called ______________________.

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During metaphase I of meiosis,homologous chromosomes can orient themselves such that one or the other will by chance go to a particular daughter cell in a process known as ________________________________.

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independen...

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Which is incorrect about meiosis?


A) Crossing over occurs in prophase I.
B) Meiosis I results in 2 haploid cells.
C) Sister chomatids separate in anaphase I.
D) Meiosis II is like mitosis.
E) Chromosome replication only occurs in interphase I.

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What is the evolutionary significance of crossing over?

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New genetic combinations can o...

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The alignment of homologous chromosomes with the exchange of genetic information between them is known as:


A) random fertilization
B) independent assortment
C) crossing over
D) lining up at the equator

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When does separation of homologous chromosomes occur?


A) Prophase I
B) Anaphase I
C) Interphase
D) Anaphase II

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Why is crossing over not possible in meiosis II?


A) Because homologous chromosomes are no longer in the same cell.
B) Because the enzymes needed for it to occur are no longer present.
C) Because prophase only occurs in meiosis I.
D) Because meiosis II is much shorter than meiosis I.

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In humans,_____________ divide by meiosis to produce eggs and sperm.


A) somatic cells
B) gametes
C) zygotes
D) germ-line cells
E) triploid

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Some organisms are able to reproduce both sexually and asexually.

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