Cell Cycle Topic 4 Flashcards
What is a homologous chromosome?
a chromosome pair 1 from each parent
What is a gene?
unit of herdity
What occurs during interphase?
protein synthsis within the cells
What occurs during the G1 phase?
Growth and metabolism
What occurs during the s-phase?
chromosomes replicate bbut are still present as chromatin
When does S-Phase occur?
Always occurs before cell divisoin
When are the kinetochoress produced?
During S-phase
What occurs during the G2 phase?
Growth and metabolism.
Enzymes and other proteins neeeded for cell divions
What are parts of mitotic phase?
- Prophase
- Mataphase
- Anaphase
- Telophase
What is the division of of cytoplam called?
Cytokinesis
What are the similarities from mitosis and meiosis?
- Prophase I II
- Chomosomes condense
- Spindle apparatus forms
- Kinetecore microtubules capture chromosomes
When is the pre embryonic period?
first 2 weeks
What undergoes rapid mitotic cell divisions that is diploid?
Zygote
What happens in the first 72 hours of implantation?
Morula is formed
How many cells does the morula contain?
16-32
True or false is the morula the same size as the zygote>
true
/In early dev what happens within the first 5 days
Blastocyst created
What does the inner cell mass differentiate to?
embryo
What does the trophoblast differentiate to?
the chlorion
when does implantation occur?
5-7 days after fertilization
What does the epiblast differentaite to?
Amion
What are the 3 germ layers in the aminion?
- Ectoderm
- Mesoderm
- Endoderm
