OBJECTIVE LIFE SCIENCE
BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A farmer found that if the temperature of his barn was kept 5 degrees F warmer his cows produce more milk.
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A farmer mated his cattle with larger cattle. The offspring weighed more and produced more meat.
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A farmer developed seeds that are resistant to fungal disease by crossing two disease resistant plants.
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Both b and c.
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Detailed explanation-1: -Broccoli, cauliflower, Brussel sprouts, cabbage, kale, and kohlrabi are all the result of selective breeding of a single wild mustard species, Brassica oleracea. Traits of the wild mustard flower buds were artificially selected for and bred to create broccoli and cauliflower.
Detailed explanation-2: -Artificial selection, also called “selective breeding”, is where humans select for desirable traits in agricultural products or animals, rather than leaving the species to evolve and change gradually without human interference, like in natural selection.
Detailed explanation-3: -crop plants with better yields. ornamental plants with particular flower shapes and colours. farm animals that produce more, better quality meat or wool. dogs with particular physiques and temperaments, suited to do jobs like herd sheep or collect pheasants. 21-Jul-2021