Actual Exam 1 Flashcards
What does the Cell division in both Prokaryotes & Eukaryotes require?
- Chromosomal compaction
- Replication of genetic material
What are the 2 key characteristics of the Maturation Promoting Factor (MPF)?
- It has a cycling component
- It is produced at restriction point
What is a key characteristic of the set up of Nucleosomes?
-The DNA wraps around 8 histone proteins to form one -They are a component of chromatin
What are 2 key characteristics of the Septum of a dividing cell?
- It is found in Prokaryotes ONLY
- Would be composed of FtsZ proteins
What is a key characteristic of DNA replication?
-The leading strand is made continuously using template running from 3’ to 5’
What 3 things are made of DNA?
- Centromeres
- Telomeres
- Alleles
During the Elongation phase of DNA replication, what enzyme is needed?
-DNA polymerase bc aids in the production of Phosphodiester bonds
During what part of the cell cycle would the amount of DNA double
- Telophase
- G2
Where do Hydrogen bonds occur in DNA?
-Between complementary bases on the interior of the helix & may be prevented from reforming by Single-stranded binding proteins
What is Synapsis?
- It occurs during P1 of meiosis
- It produces a tetrad
What are Okazaki Fragments?
-They are pieces of DNA & require multiple primers for their synthesis
What is true about the events of Replication?
- A DNA polymerase removes primers
- It occurs after the “start” cell cycle checkpoint has been passed
At what point of the cell cycle would the chromosomes be made of 2 chromatids?
- Mitotic metaphase
- G2
What is difference between Mitosis and Meiosis in terms of chromosome movement?
- In Mitosis, chromosomes DO NOT assort independently
- In Meiosis, chromosomes DO assort independently
When does Crossing over occur?
-In prophase I of Meiosis
