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biotechlearn.org.nz
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Definitions (695)
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asexual propagation
Reproduction without combining gametes and can result in the production of many plants that are genetically identical.
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nobel prize
An annual award for outstanding achievements in either physics, chemistry, medicine, literature, economics or the promotion of peace.
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silage
High-moisture feed for livestock that is made from crops fermented anaerobically (without air) and can be stored over winter.
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supernatant
The liquid layer that remains after a solution is spun in a centrifuge.
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backcrossing
A breeding method for introgressing a desirable trait into an elite breeding population. In traditional backcrossing, successive generations of apples with the trait of interest are crossed with the same high-quality parent. In modified backcrossing, a different high-quality parent is used at each generation.
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bacteria
Single-celled microorganisms that lack a nucleus.
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bacterial artificial chromosome
A bacterial vector for cloning DNA. BACs can accommodate longer stretches of DNA than plasmid vectors.
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base
DNA is made up of four bases: adenine (A), cytosine (C), guanine (G) and thymine (T). In RNA, the base uracil (U) replaces thymine.
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base pairs
The unit of double-stranded DNA. Bases pair up so that A joins with T and C joins with G.
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beta-glucans
A type of sugar molecule.
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