Most common CFTR mutation is a ΔF508 causes_

a)Changing the conformation of the cytosolic portion of CFTR so that the signal is unable to bind to Sec24

b)Changing the conformation of the cytosolic portion of CFTR so that the signal is unable to bind to Sec23

c)blocking its packaging into COPII vesicles budding from the ER

d)blocking its packaging into COPI vesicles budding from the ER

Which of the following is correct result of mutated CFTR?

#Question id: 3280

#Unit 11. Evolution and Behavior

Small populations are threatened by the loss of genetic diversity from

a. Inbreeding

b. Genetic drift

c. Limited mating

#Question id: 3281

#Unit 11. Evolution and Behavior

One population X has 750 AA, 0 Aa, and 250 aa; the other Y has 500 AA, 500 Aa, and 0 aa. After one generation of random mating, the genotype frequencies X and Y respectively if the population size remains 1,000.

#Question id: 3282

#Unit 11. Evolution and Behavior

Natural selection results in different forms of plants which can survive in contaminated or uncontaminated soil. Type of natural selection is

#Question id: 3283

#Unit 11. Evolution and Behavior

if the forward ( p in to q) and reverse ( q in to p) mutation rates for alleles at a locus are 1×10−1 and 1×10−2 per generation, respectively and the allelic frequencies are p = 0.20 and q = 0.80. if you assuming random matting population. Which of the following observation correct?

#Question id: 3284

#Unit 11. Evolution and Behavior

The fitness of three genotype are A1A1 < A1A2 = A2A2) Which of the following observation correct?

#Question id: 3285

#Unit 11. Evolution and Behavior

Natural selection continually operates on each species to keep up with improvements made by competing species; each species’ environment deteriorates as its competitors evolve new adaptations. This is known as