5 Written questions
5 Matching questions
- What would happen if codons consisted of fewer than 3 bases?
- Griffiths conclusion
- double helix
- mice injected with disease causing strain
- In eukaryotes, DNA replication proceeds in how many different directions along the DNA molecule?
- a the mice developed pneumonia and died
- b there wouldn't be enough for the 64 different combinations
- c two strands of nucleotides wound about each other; structure of DNA
- d some factor transformed the harmless strain into the disease causing ones. This factor might be a gene
- e 2 directions
5 Multiple choice questions
- can be used to predict the outcomes of genetic crosses
- a mutation in which one nucleotide is replaced by another nucleotide
- term used to describe organisms that produce offspring identical to themselves if allowed to self pollinate
- -disease causing strain (smooth colonies)
-harmless strain (rough colonies.
- process that releases energy by breaking down food molecules in the absence of oxygen
5 True/False questions
heterozygous → genetic makeup
cytokinesis in plants → the cell membrane is drawn inward until the cytoplasm is punched into 2 nearly equal parts
each part contains its own nucleus and cytoplasmic organelles
anaphase → the chromatin condenses into chromosomes. the centrioles separeate and a spindle begins to form. the nuclear envelope breaks down.
longest phase of mitosis
2 main stages of cell division → mitosis and cytokinesis
cyclins → protein that regulates the timing of the cell cycle in eukaryotic cells