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Sexual Reproduction
Growth and Development
Embryonic Stem Cell
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?
How many chromosomes are shown in this diagram? How many chromatids are shown?
Stages of Mitosis
Interphase
Prophase
Metaphase
Anaphase
Telophase
Number of cells Total
Stem Cells II
Embryonic Stem Cells (ES)
In Vitro Fertilization
Louise Brown – Birthday 1978
Nuclear Transfer
Adult Stem Cells
Induced Pluripotent Stem Cells (iPS)
Uncontrolled Growth
Angiogenesis
Apoptosis
“Immortal Cells”
Telomerase
Metastasis
Immune System
T-Cells and B-Cells
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?
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
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
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
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
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
Question 7
• What specific events could create gametes as shown in the image below?
Question 8
• Please Order the cells of the cell cycle shown in order of sequence…the earliest first.
1
2
3
4
5
