Vocabulary 1 | Vocabulary 2 | Meiosis | Random Q’s | Mitosis | Miscellaneous |
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Diploid
The vocab word meaning 2N
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Haploid
The vocabulary word meaning 1N
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Sister Chromatids
The 2 connected chromatids are called…
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Centromere
The center portion holding the 2 chromatids together is called…
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Polar Bodies
Formed after Meiosis in females only and are lacking cytoplasm
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A group of 4 chromatids
or 2 sister chromatids
Tetrad
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Crossing Over
process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other.
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Oogenesis
Female Meiosis
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Spermatogenesis
Male Meiosis
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Meiosis
Division in sex cells
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Each parent contributes _____
Chromosomes a piece.
23=46 TOTAL
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Interphase (Synthesis)
In this phase chromosomes are replicated
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Prophase I
In this phase, the tetrads form and crossing over occurs here
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4
The end of Meiosis II, ____ daughter cells are formed.
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Sperm Cells
After Meiosis II, males produce 4 _______.
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Cyclin & CDK
This protein tells the cell when to divide
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Cancer
The overgrowth of cells forming a tumor is known as…
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6
If an organism’s diploid # is 12, then it’s haploid # is_____.
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n
The # of chromosomes in a gamete is represented by what symbol?
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Cell plate in plant cells will be visible, in animal cells a cleavage furrow will be visible
How do you know if a cell dividing is a plant or animal cell?
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daughter
Cell divides into 2 ________ cells before it gets too big.
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Interphase
This is the phase where the cell grows and DNA is replicated
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G1, S, G2
3 Parts of Interphase
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Prophase
Chromosomes become visible, chromatin condenses to form sister chromatids, centrioles separate, spindle fibers appear,
nucleus & nucleolus disappear
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Anaphase
In this phase, sister chromatids separate and move to opposite ends (poles) of the spindle fibers
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Centrioles
Spindle fibers arise from what cell structure?
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Move chromosomes around the cell
What do spindle fibers do?
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No, b/c cyclin is the stimulator of Mitosis
Would cyclin be useful in a cell that is already undergoing Mitosis?
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Metaphase
During what phase of Mitosis or Meiosis do chromosomes line up along the middle of the cell?
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Genetic Variety
What is the purpose of crossing over?