Meiotic Recombination and Crossing Over

1

During Meiosis I, chromosome structure changes only slightly

1

Which stage of chromosome momvement is this?

1

Name this type of chromosome arrangement

1

What is this stage called?

1

Name it

1

In which stage of chromosome rearrangement are Rabl and Bouquet formations found?

1

Chromosome movement is vital for pairing

1

Match the word to it's definition- the occurrence of linked genes in non random proportions in members of the population

1

Linkage between two genes can only be broken by _

1

Genetic Map Distance = % crossing over

1

Genetic Map distance is measured in

1

1 cM = ?

1

% Crossing over = [(No of recombinants/total gametes) x 100] x 2

1

How is meiotic recombination initiated?

1

Which of the following proteins non-randomly damages the DNA in meiotic cells?

1

Once breaks are formed by Spo_, they are monitored by mismatch repair proteins

1

What is the role of mismatch repair proteins?

1

The damage to the DNA is done one chromosome at a time

1

Why are the breaks formed useful?

1

Meiosis can proceed happily without the DNA damage occuring

1

All chromosomes will get at least once crossover (known as interference)

1

What is the synaptonemal complex?

1

Which of the following are meiosis specific repair proteins?

1

Increasing the distance between two genes decreases the chance of a crossover occurring between them

1

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?

Year 2 Quiz on Meiotic Recombination and Crossing Over, created by gina_evans0312 on 16/12/2013.

Meiotic Recombination and Crossing Over

Meiotic Recombination and Crossing Over

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?

Name it

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

Linkage between two genes can only be broken by _

Genetic Map Distance = % crossing over

Genetic Map distance is measured in

1 cM = ?

% Crossing over = [(No of recombinants/total gametes) x 100] x 2

How is meiotic recombination initiated?

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?

The damage to the DNA is done one chromosome at a time

Why are the breaks formed useful?

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?