History of Life
What two domains of life are also kingdoms?
Archaea and Bacteria
What type of cell division creates 2 identical daughter cells?
Mitosis
What is it called when a cell has 3 copies of a chromosome?
A trisomy
What is it called when there are two copies of the same allele?
Homozygous
What are the two types of nitrogenous bases?
Purines & Pyrdimidines
1) Linear vs Circular genome
2) Membrane enclosed organelles
3) Nucleus vs no nucleus
Are somatic cells haploid or diploid?
Diploid
In what phase of Meiosis does Independent Assortment occur?
Metaphase 1
Is this a dihybrid cross?
Tt x Tt
No! It's a monohybrid cross
What are the 3 components of a nucleotide?
Nitrogenous base, phosphate group, and pentose sugar
In what period did dinosaurs go extinct?
The Late Cretaceous
T/F: Chromosomes should always be double stranded.
FALSE: This is only needed prior to cell division.
Is a nondisjunction event more severe in Meiosis 1 or Meiosis 2?
Meiosis 1, because all daughter cells will be affected
What is the phenotypic ratio for a dihybrid cross?
9:3:3:1
Which type of mutation is the most severe?
Frameshift mutation
Darwin's finches and the Cambrian Explosion are both examples of this type of rapid diversification of species:
Adaptive Radiation
What would be the equation for a cell with two copies of 2 types of chromosomes?
2n = 4
Meiosis 1 separates _________, while Meiosis 2 separates ___________
Homologous pairs, sister chromatids
What are the 3 types of dominance?
Complete Dominance, Incomplete Dominance, Codominance
What is the Central Dogma? (Generally)
The flow of information from DNA to RNA to Protein
What are the four eons of time?
Hadean, Archaen, Proterozoic, Phanerozoic
What two processes occur in meiosis, but NEVER in mitosis?
Independent Assortment and Crossing Over
If a cell contains 20 chromosomes prior to DNA replication, how many chromosomes and chromatids will be present after DNA replication?
20 chromosomes with 40 chromatids
Would a color blind mother AND color blind father be able to have a child who is not color blind?
No
Cancer is an accumulation of what kind of cell division?
Mitotic cell divisions