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Question 5 (1 point) Pigs are vulnerable to infection by H5N1 strains specialized to pigs and different strains that can be infective to humans, which can both be present in an individual pig at the same time. When this occurs, it is possible for genes from the two strains to recombine, producing a novel virus. The origin of new types of flu virus in the manner described above was referred to as: a founder event followed by population expansion. macromutation and the origin of a new species strong genetic drift. O an antigenic shift caused by zoonosis. Question 6 (1 point) The example of artificial selection applied to Asian grey wolves was used to demonstrate what point? That selection can often produce phenotypes beyond the ancestral range of traits. That inbreeding depletes genetic variation and exposes recessive deleterious alleles. That evolution can be constrained by stabilizing selection. That evolution has fine-tuned the wolf to be a top predator. Question 7 (1 point) ലം വial : an aim too th online

Answer 1

5. d) An antigenic shift caused by zoonosis

Explanation: Antigenic shift, in simple words, is a process of combination of different stains of single virus or two different viruses, which results in formation of a novel new stain of virus with combined features of all the viruses.

This situation is classically seen in case of Influenza A virus strains which infects both humans and other animals. This create chances of antigenic shift.

Note: The evolution of the same, without combining in animals, at a natural pace is is called antigenic drift.

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