biology - cell cycle and mitosis 0910
TRANSCRIPT
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Sexual Reproduction
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Growth and Development
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Embryonic Stem Cell
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A chicken has 78 Chromosomes in its Somatic Cells:
• How many chromosomes did the chicken inherit from each parent?
• How many chromosomes are in each of the chicken’s gametes?
• How many chromosomes will be in each somatic cell of the chicken’s offspring?
• How many chromosomes are in a “set”
• Which came first…chicken or egg?
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How many chromosomes are shown in this diagram? How many chromatids are shown?
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Stages of Mitosis
Interphase
Prophase
Metaphase
Anaphase
Telophase
Number of cells Total
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Stem Cells II
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Embryonic Stem Cells (ES)
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In Vitro Fertilization
Louise Brown – Birthday 1978
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Nuclear Transfer
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Adult Stem Cells
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Induced Pluripotent Stem Cells (iPS)
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Uncontrolled Growth
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Angiogenesis
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Apoptosis
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“Immortal Cells”
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Telomerase
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Metastasis
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Immune System
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T-Cells and B-Cells
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Question 1
• A: What is the role of mitosis and meiosis in the human life cycle. Please be specific.
• B: What is the difference from sister chromatids and homologous chromosomes?
• C: Does a tumor metastasizing relate more to anchorage dependance or density-dependent inhibition? Explain.
• D: For a cell 2n=24. How many chromosomes would be in a cell:
D1: After Mitosis?D2: In a gamete of this organism?D3: In a cell after meiosis I?D4: After meiosis II?
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Question 2• If this is a cell
undergoing mitosis• A: What stage is this cell in?• B: Would you find the
homologous Chromosome to chromosome 1, at 2 or 3…explain.
• C: What stage precedes this image?
1 2
3
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Question 3
• A:Which cell(s) has the spindle comletely formed?• B:Which cell’s DNA is entirely in the form of chromatin?• C:If these were human cells which cell(s) would have 46
chromosomes?• D: In which cells are sister chromatids connected by a
centromere?
1 2 3
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Question 4
• A: Which Cell is in metaphase II?• B: In stage 5, what is being seperated from each other?• C: Immediately after stage 6 is the DNA replicated?• D: Are these stages listed in chronological order?• E. Assuming that this is a human cell, are the cells produced by stage 6
haploid or diploid? Explain.
1 2 3
4 5 6
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Question 5• A: What stage of the cell cycle
or mitosis is represented by 1?• B: How would you describe the
DNA in 2? Please be specific.• C: Which stages are
represented from 3?– Prophase
– Anaphase
– Anaphase I
– Anaphase II
– Metaphase II
1
2
3
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Question 6
• A: What is the name of structure 2?
• B: Is structure 3 a kinetochore or non-kinetochore microtubule?
• C: What is the blue thing in this image?
2
1
3
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Question 7
• What specific events could create gametes as shown in the image below?
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Question 8
• Please Order the cells of the cell cycle shown in order of sequence…the earliest first.
1
2
3
4
5