FORESTRY
GENETICS TREE IMPROVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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had little genetic variability
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had increased biodiversity
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were the product of fertilization
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were the result of biotechnology
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Detailed explanation-1: -The main cause was a disease which affected the potato crop, upon which a third of Ireland’s population was dependent for food. There had been crop failures before but during the famine it failed across the whole country, and reoccurred over several years.
Detailed explanation-2: -Abstract. Phytophthora infestans is a destructive plant pathogen best known for causing the disease that triggered the Irish potato famine and remains the most costly potato pathogen to manage worldwide.
Detailed explanation-3: -In the 1800s, the Irish solved their problem of feeding a growing population by planting potatoes. Specifically, they planted the “lumper” potato variety. And since potatoes can be propagated vegetatively, all of these lumpers were clones, genetically identical to one another.