o keep their dog breeds "pure," breeders will keep dogs of different breeds in physicallyseparate areas when the female is in heat. This aspect of artificial selection is most closely analogousto which of the following reproductive isolating mechanisms?A. Mechanical isolationB. Gametic isolationC. Cooperative breedingD. Ecological isolationE. Hybrid breakdown
Question
o keep their dog breeds "pure," breeders will keep dogs of different breeds in physicallyseparate areas when the female is in heat. This aspect of artificial selection is most closely analogousto which of the following reproductive isolating mechanisms?A. Mechanical isolationB. Gametic isolationC. Cooperative breedingD. Ecological isolationE. Hybrid breakdown
Solution
The aspect of artificial selection described in the question is most closely analogous to D. Ecological isolation.
Ecological isolation occurs when species do not mate because they occupy different habitats. In the context of the question, the breeders are ensuring that dogs of different breeds do not mate by keeping them in physically separate areas, similar to how different species may be kept from mating due to being in different habitats.
Mechanical isolation (A) refers to when species are physically unable to mate due to incompatible reproductive organs. Gametic isolation (B) refers to when the sperm of one species cannot fertilize the eggs of another. Cooperative breeding (C) is a social system characterized by alloparental care: offspring are cared for not only by the parents, but also by additional group members. Hybrid breakdown (E) is the tendency of the offspring of two different species to be less fit than their parents.
Similar Questions
Artificial selection has resulted in a wide variety of domesticated dog breeds. Several of these breeds are shown below.Which of the following is true when a new dog breed is being developed? A. Female dogs are allowed to select male dogs with which to produce offspring. B. Humans choose the potential parents for crosses based on desired characteristics. C. Male dogs are allowed to select female dogs with which to produce offspring. D. Many dogs with varied characteristics are allowed to mate randomly.
What are reproductive isolating mechanisms?Multiple choice question.Barriers that prevent successful interbreeding among members of different speciesWays used by researchers to facilitate breeding of animals in captivityProcedures used in the study of courtship behavior in different speciesTechniques for isolating gametes and reproductive tissues for genetic analysis in order to identify speciesProcedures used to study the embryonic development of different species
Which one of these steps is involved in selective breeding?Choosing individuals from different species to breed together.Letting individuals reproduce without interference.Artificially inserting genes from a one species to another.Choosing individuals with desirable features.I DON'T KNOWSUBMIT ANSWER
Some biologists believe that the term "isolating mechanisms" is confusing because it implies that traits evolved to isolate species, whereas in most cases, traits that reproductively isolate species Blank______.Multiple choice question.are the product of hybridization between individuals of partially reproductively isolated populationsare the incidental consequence of natural selection for adaptation to particular environmentsare the result of increased gene flow between different populationsevolve due to the founder effect
Improved varieties of dogs, plants developed by :-Environmental selection Natural selection Artificial selection Protective selection
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