During Meiosis I, chromosome structure changes only slightly
Which stage of chromosome momvement is this?
Name this type of chromosome arrangement
What is this stage called?
In which stage of chromosome rearrangement are Rabl and Bouquet formations found?
Chromosome movement is vital for pairing
Match the word to it's definition- the occurrence of linked genes in non random proportions in members of the population
Mendel's 2nd law
The Hardy-Weinberg principle
Linkage between two genes can only be broken by _
Genetic Map Distance = % crossing over
Genetic Map distance is measured in
1 cM = ?
1% crossover recombination
10% crossover recombination
5% crossover recombination
% Crossing over = [(No of recombinants/total gametes) x 100] x 2
How is meiotic recombination initiated?
Double strand breaks
Single strand breaks
Which of the following proteins non-randomly damages the DNA in meiotic cells?
Once breaks are formed by Spo_, they are monitored by mismatch repair proteins
What is the role of mismatch repair proteins?
To monitor induced DNA damage
To detect and reverse any incorrect DNA pairings
To detect and amplify any incorrect pairings
The damage to the DNA is done one chromosome at a time
Why are the breaks formed useful?
They ensure meiotic cell machinery is working properly
They are a precursor to chiasma
They prevent meiosis until the cell is ready
Ensure the pairing of homologous chromosomes
Meiosis can proceed happily without the DNA damage occuring
All chromosomes will get at least once crossover (known as interference)
What is the synaptonemal complex?
A structure that formed between homologous chromosomes during meiosis
A structure that formed between sister chromatids during meiosis
Which of the following are meiosis specific repair proteins?
Increasing the distance between two genes decreases the chance of a crossover occurring between them
Parent Genotypes are homologous for AB & ab respectively
The gametes have the genotypes 35, 15, 15, 35 for AB, Ab, aB and ab respectively
How far apart are AB/ab in cM?