442014
Descrição
Quiz por gina_evans0312, atualizado more than 1 year ago
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Criado por gina_evans0312
mais de 10 anos atrás
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Questão 1
Questão
Sexual reproduction requires the production of gametes containing half the chromosomes of the parent
Responda
- True
- False
Questão 2
Questão
Mitochondrial DNA comes from the...
Responda
-
Mother
-
Father
-
Both
Questão 3
Questão
Define Homologous Chromosomes
Responda
-
Chromosomes of the same length and centromere position with genes for the same characteristics
-
Chromosomes of the same length and centromere position with genes for complimentary characteristics
-
Chromosomes of the different length/ centromere position with genes for the same characteristics
Questão 4
Questão
What must sister chromatids have?
Responda
-
Two identical replications
-
Three identical replications
-
Of different chromosomes
-
Of the same chromosomes
Questão 5
Questão
How do you get from homologous chromosomes to sister chromatids?
Responda
-
Replication
-
Transcription
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DNA degredation
Questão 6
Questão
What is the difference between Meiosis I and Meiosis II?
Responda
-
Meiosis I- Sister chromatids separate Meiosis II- Homologous chromosomes separate
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Meiosis I- Homologous Chromosomes separate Meiosis II- Sister chromatids separate
Questão 7
Questão
In Meiosis I, name two changes to nuclear architecture that assist homologous chromosome pairing
Responda
-
Bouquet formations
-
Rabl formations
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Spine formations
-
Chiasmata
Questão 8
Questão
Telomere clustering causes Rabl formations
Responda
- True
- False
Questão 9
Questão
Some organisms have elements that facilitate pairing i.e.
Responda
-
Chromatin
-
Heterochromatin
-
Homochromatin
Questão 10
Questão
Synaptonemal complexes are found between homologous chromosomes and are thought to facilitate what?
Responda
-
Chromosome pairing
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Chromosome synapsis
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Chromosome recombination
Questão 11
Questão
Chromosome synapsis is the close lying of chromosomes next to each other
Responda
- True
- False
Questão 12
Questão
The separating of homologous chromosomes is mediated by what?
Responda
-
Synapsis
-
Chiasmata
-
Rabl formations
-
Helicase
Questão 13
Questão
Other species have specilised linkages - name two examples
Responda
-
Lewis formations
-
Rabl formations
-
Achiasmate
-
Non exachange
Questão 14
Questão
Cohesin only occurs between sister chromatids
Responda
- True
- False
Questão 15
Questão
What is the role of cohesin in Meiosis I?
Responda
-
Holds sister chromatids together
-
Allows chiasmata to occur
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Counteracts microtubule pulling force until the crossover is complete
Questão 16
Questão
What is the role of chiasmata/crossing over in meiosos?
Responda
-
Increases genetic diversity
-
Prevents mistakes (i.e. incorrect separation)
-
Increases efficiency of microtubule separation
Questão 17
Questão
In Meiosis I, sister chromatids must go to separate poles
Responda
- True
- False
Questão 18
Questão
What is the 'Mono-orientation of sister kinetochores?'
Responda
-
Sister chromatids remaining together and travelling to the same pole
-
The exchange of DNA between homologous chromosomes
-
Sister chromatids separating and travelling to opposite poles
Questão 19
Questão
What is the budding/fission yeast version of 'Mono-orientation of sister kinetochores'?
Responda
-
Monopolin
-
Monoferrin
-
Monobindin
Questão 20
Questão
We have no idea how Mono-orientation of sister kinetochores occurs in humans
Responda
- True
- False
Questão 21
Questão
How is Cohesin lost in Anaphase I and II
Responda
-
Microtubules attach and release separase
-
Separase is released during chiasmata
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Separase is transcribed in the nucleus and diffuses to homologous chromosomes
Questão 22
Questão
During anaphase I, cohesin is lost where?
Responda
-
Between sister chromatids
-
At the centromere
Questão 23
Questão
According to Medel's first law of inheritance, what happens to the two alleles present during replication?
Responda
-
They are separated away from each other to opposite poles, so each gamete has only 1 allele, giving a ratio of 2:2 in the gametes
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They are not separated and go to the same pole, so each gamete has two alleles, giving a ratio of 1:1 in the gametes
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They are separated to the same poles, so each gamete has two alleles, giving a ratio of 2:2 in the gametes
Questão 24
Questão
What assumptions are made in the Hardy Weinburg Equilibrium Equation?
Responda
-
Only random mating and gene flow
-
No selection
-
No mutation
-
No meiotic drive
Questão 25
Questão
Mendel's Second Law is The Law Of Segregation
Responda
- True
- False
Questão 26
Questão
State Mendel's Sencond Law
Responda
-
That alleles are separated from each other so each gamete will possess one allele
-
The order in which the homologous chromosomes line up at the equator is completely random with respect to each other
Questão 27
Questão
Linked genes are much more likely to be separated
Responda
- True
- False
Questão 28
Questão
Define Linkage Disequilibrium
Responda
-
Genes are found on the same chromosome
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The clustering of telomeres prevents genes from separating
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The occurrence in members of a population, combinations of linked genes in non-random proportions
Questão 29
Responda
-
A bivalent
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A chiasma
-
A bouquet formation
Questão 30
Responda
-
Bivalent
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Chiasma
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Linkage disequilibrium
Questão 31
Responda
-
Homologous Chromosomes
-
Sister chromatids
-
Recombinant chromatids
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