Oxford University Press | Online Resource Centre

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Question 01

In single-celled organisms genomic conflicts will not occur, because there are no multiple levels of replication. True or false?

a) True

b) False

Question 02

If in plants mitochondria would be transmitted by both the male and the female parent, male sterility would be expected to be much rarer than it is now. True or false?

a) True

b) False

Question 03

Multi-level selection cannot occur in a system consisting of different groups of individual organisms. True or false?

a) True

b) False

Question 04

Genomic conflict occurs whenever there is multi-level selection. True or false?

a) True

b) False

Question 05

The outcome of a genomic conflict depends on the time scales at which replication occurs at the different levels. True or false?

a) True

b) False

Question 06

Sexual reproductive systems are more vulnerable to genomic conflicts, because:

a) there is less scope for the transmission of a lower-level genomic parasite in a sexual system than in an asexual system.

b) there is more scope for the transmission of a lower-level genomic parasite in a sexual system than in an asexual system.

Question 07

Bacterial conjugative plasmids may create genomic conflict because:

a) they may make the host cell addicted to their presence, by producing both a toxin and its antidote, of which the latter is less stable than the former.

b) the long-term fate of the plasmids is not absolutely coupled to that of their host.

Question 08

Segregation distortion is also called meiotic drive. True or false?

a) True

b) False

Question 09

In diploids a meiotic drive element like the t haplotype in mice can be stably maintained in populations because:

a) the meiotic drive occurs only in males, not in females.

b) the advantage of the meiotic drive element at segregation in heterozygotes is compensated by loss of fitness in homozygotes.

Question 10

The slight large-scale distortion of Mendelian segregation in human genomic data is probably caused by:

a) meiotic drive.

b) differential fertilization success among gametes.

c) selection among zygotes against certain alleles.

Question 11

Chromosomal meiotic drive systems consist of two components, a 'killer' element and an immunity factor effective against the killing. Which of the following statements is true?

a) These two elements reside on different chromosomes.

b) These two elements are closely linked on the same chromosome.

c) These two elements occupy homologous positions on different chromosomes

Question 12

Cytoplasmic genetic transmission offers more opportunities for distorted segregation than meiotic drive of nuclear elements. Why?

a) The mechanisms controlling segregation of cytoplasmic genetic elements are less precise than meiosis.

b) Cytoplasmic genetic elements are not located on chromosomes.

c) Cytoplasmic genetic elements replicate faster than nuclear chromosomes.

Question 13

What is an important role of uniparental cytoplasmic transmission?

a) It reduces the scope for genomic conflicts between paternal and maternal cytoplasmic elements.

b) It reduces the scope for genomic conflicts between nuclear and cytoplasmic genetic elements.

Question 14

Is genetic imprinting in mammals likely to be associated with genomic conflict?

a) No, it prevents the evolution of selfing in mammals, thus protecting males from possible extinction.

b) Yes, it may have evolved to regulate conflicts between the male and female parent over investment in the offspring.

Oxford University Press, Online Resource Centre, Chapter 09.

Chapter 09

Instructions

Question 01

Question 02

Question 03

Question 04

Question 05

Question 06

Question 07

Question 08

Question 09

Question 10

Question 11

Question 12

Question 13

Question 14