InterviewSolution
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InterviewSolution
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The factors involved in the formation of new species areA. isolation and competitionB. gene flow and competitionC. competition and mutationD. isolation and vriation. |
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Answer» Correct Answer - D Isolation is the prevention of mating amongst interbreeding groups due to physical (e.g. geopgraphical, ecological) and biotic (e.g., physiological, behavioural, mechanical, genetic ) barriers. Reproductive isolating mechanisms are the biological properi9tes of individuals which prevent the interbreeding of naturally sympatric populations. It maintains the characters of the species but can lead to the origin of new species. Also, Darwin considered that useful variations are transmitted to the offspring and appear more prominently in succeeding generations. After some generations these become continous and gradual varaiations in the possessor would be so distinct that they form a new species. |
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