DNA and Chromosomes
Inheritance
Probability, Punnett Squares and Pedigrees
Misc.
Meiosis
100
What makes a nucleotide
Phosphate, sugar and nitrogenous base
100
A(n) _________ is an alternate version of a gene
allele
100
The missing genotype is:
aa
100
The type of inheritance where both alleles are displayed equally.
Codominance
100
When does DNA replication take place
Interphase
200
The number of chromosomes that are found in human sperm cells
23
200
_____________________ alleles show their effect even if the individual only has one copy of the allele
dominant
200
What are the genotypic and phenotypic ratios shown in the problem below:
Genotypic Ratio: Bb= 50%, bb = 50%
Phenotypic Ratio: Undeterminable (not enough information)
200
Which enzyme is required to build an mRNA strand?
RNA polymerase
200
What holds the chromosomes together
centromeres
300
____________ leads to aneuploidy
Nondisjunction
300
What inheritance pattern is shown below
Incomplete Dominance
300
Being freckled or not (F or f) follows the autosomal dominant mode of transmission. Affected individuals are freckled and shaded in the pedigree. According the the pedigree shown below the genotype of individual I-2 is:
Ff
300
How many times does oogenesis arrest?
twice
300
When cytokinesis is completed in meiosis it produces ____ haploid cells
4
400
What type of ploidy is it when there is only one chromosome present at a specific location?
Monosomy
400
Blood types are an example of what types of inheritance patterns 
Multiple Alleles and Codominance
400
Determine the genotypes of the parents crossed in the problem below:
RrYy x RRyy
400
____________________ chromosomes:
(a) have the same chromosome number (ex. both are chromosome #4)
(b) contain the same genes/control the same traits
Homologous
400
When does crossing over occur
Prophase 1
500
Create the complementary mRNA strand for the DNA sequence below:
ATG CAT GGA CTT AGA
UAC GUA CCU GAA UCU
500
Skin colour is inherited through multiple genes. This inheritance pattern is called.
Polygenic inheritance
500
The trait being passed down below follows what inheritance pattern?
X linked Dominant (all daughters of affected fathers have it)
500
What is the enzyme called that unwinds the DNA during DNA replication?
DNA helicase
500
What step of meiosis is shown described as a single file line of chromosomes in the middle of the cell.
Metaphase 2