During  a  field  trip,  an  instructor  touched  a  moth  resting  on  a  tree  trunk.  The  moth  raised  its  forewings  to  reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory  receptors  had  fired  and  triggered  a  neuronal  reflex  culminating  in  the  contraction  of  certain  muscles.  A second student responded that the behaviour might frighten predators. Which statement best describes these explanations?

#Question id: 3399

#Unit 11. Evolution and Behavior

What is probability of neutral mutation to be lost from the population size 100 and Probability of being homozygote in given population size 10 respectively?

#Question id: 3398

#Unit 11. Evolution and Behavior

Genetic drift in a small population for multiple generations can significantly affect the composition of a population’s gene pool. Following some observation are given for reason of Genetic drift?

A) Small populations are threatened by a loss of genetic variability. This loss may be caused by inbreeding, genetic drift, and limited mating.

B) Sampling error can arise is through the founder effect, which is due to the limited matting within population

C) Genetic drift arises is through a genetic bottleneck, which develops when a population undergoes a drastic reduction in population size.

D) Variance in allele frequency due to genetic drift will be maximal when one allele is very rare and the population size is small.

Which of the above observation are true?

#Question id: 5200

#Unit 11. Evolution and Behavior

What is the difference between a linkage map and a physical map?

#Question id: 5201

#Unit 11. Evolution and Behavior

How is a physical map of the genome of an organism achieved?

#Question id: 5202

#Unit 11. Evolution and Behavior

Which of the following most correctly describes a shotgun technique for sequencing a genome?

#Question id: 5205

#Unit 11. Evolution and Behavior

Why is it preferable to use large computers and databases in searching for individual genes, rather than testing each sequence for possible function?