Test
Meiosis and Mendelian Genetics
Preguntas del test (31)
1Sexual reproduction requires the production of gametes containing half the chromosomes of the parent
- AVerdadero
- BFalso
2Mitochondrial DNA comes from the...
- AMother
- BFather
- CBoth
3Define Homologous Chromosomes
- AChromosomes of the same length and centromere position with genes for the same characteristics
- BChromosomes of the same length and centromere position with genes for complimentary characteristics
- CChromosomes of the different length/ centromere position with genes for the same characteristics
4What must sister chromatids have?
- ATwo identical replications
- BThree identical replications
- COf different chromosomes
- DOf the same chromosomes
5How do you get from homologous chromosomes to sister chromatids?
- AReplication
- BTranscription
- CDNA degredation
6What is the difference between Meiosis I and Meiosis II?
- AMeiosis I- Sister chromatids separate
Meiosis II- Homologous chromosomes separate - BMeiosis I- Homologous Chromosomes separate
Meiosis II- Sister chromatids separate
- AMeiosis I- Sister chromatids separate
7In Meiosis I, name two changes to nuclear architecture that assist homologous chromosome pairing
- ABouquet formations
- BRabl formations
- CSpine formations
- DChiasmata
8Telomere clustering causes Rabl formations
- AVerdadero
- BFalso
9Some organisms have elements that facilitate pairing i.e.
- AChromatin
- BHeterochromatin
- CHomochromatin
10Synaptonemal complexes are found between homologous chromosomes and are thought to facilitate what?
- AChromosome pairing
- BChromosome synapsis
- CChromosome recombination
11Chromosome synapsis is the close lying of chromosomes next to each other
- AVerdadero
- BFalso
12The separating of homologous chromosomes is mediated by what?
- ASynapsis
- BChiasmata
- CRabl formations
- DHelicase
13Other species have specilised linkages - name two examples
- ALewis formations
- BRabl formations
- CAchiasmate
- DNon exachange
14Cohesin only occurs between sister chromatids
- AVerdadero
- BFalso
15What is the role of cohesin in Meiosis I?
- AHolds sister chromatids together
- BAllows chiasmata to occur
- CCounteracts microtubule pulling force until the crossover is complete
16What is the role of chiasmata/crossing over in meiosos?
- AIncreases genetic diversity
- BPrevents mistakes (i.e. incorrect separation)
- CIncreases efficiency of microtubule separation
17In Meiosis I, sister chromatids must go to separate poles
- AVerdadero
- BFalso
18What is the 'Mono-orientation of sister kinetochores?'
- ASister chromatids remaining together and travelling to the same pole
- BThe exchange of DNA between homologous chromosomes
- CSister chromatids separating and travelling to opposite poles
19What is the budding/fission yeast version of 'Mono-orientation of sister kinetochores'?
- AMonopolin
- BMonoferrin
- CMonobindin
20We have no idea how Mono-orientation of sister kinetochores occurs in humans
- AVerdadero
- BFalso
21How is Cohesin lost in Anaphase I and II
- AMicrotubules attach and release separase
- BSeparase is released during chiasmata
- CSeparase is transcribed in the nucleus and diffuses to homologous chromosomes
22During anaphase I, cohesin is lost where?
- ABetween sister chromatids
- BAt the centromere
23According to Medel's first law of inheritance, what happens to the two alleles present during replication?
- AThey 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
- BThey are not separated and go to the same pole, so each gamete has two alleles, giving a ratio of 1:1 in the gametes
- CThey are separated to the same poles, so each gamete has two alleles, giving a ratio of 2:2 in the gametes
24What assumptions are made in the Hardy Weinburg Equilibrium Equation?
- AOnly random mating and gene flow
- BNo selection
- CNo mutation
- DNo meiotic drive
25Mendel's Second Law is The Law Of Segregation
- AVerdadero
- BFalso
26State Mendel's Sencond Law
- AThat alleles are separated from each other so each gamete will possess one allele
- BThe order in which the homologous chromosomes line up at the equator is completely random with respect to each other
27Linked genes are much more likely to be separated
- AVerdadero
- BFalso
28Define Linkage Disequilibrium
- AGenes are found on the same chromosome
- BThe clustering of telomeres prevents genes from separating
- CThe occurrence in members of a population, combinations of linked genes in non-random proportions
29What is the following showing?
- AA bivalent
- BA chiasma
- CA bouquet formation
30What is the following showing?
- ABivalent
- BChiasma
- CLinkage disequilibrium
31What is the following highlighting
- AHomologous Chromosomes
- BSister chromatids
- CRecombinant chromatids
Información
- Descripción
- Year 2 Test sobre Meiosis and Mendelian Genetics, creado por gina_evans0312 el 15/12/2013.
- Autor
- gina_evans0312
- Idioma
- English
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