GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1 nm
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1% recombination
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1 chromosome
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1 mutation
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Detailed explanation-1: -One map unit is equal to 1% recombination frequency and is also referred as centiMorgan, i.e., 1 centimorgan = 0.01 recombination frequency.
Detailed explanation-2: -One percent recombination is equal to one map unit, two percent recombination is equal to two map units, and so forth. Although map units do not describe the physical distance, they are related. The greater the number of map units (recombination units), the larger the physical distance between the two genes.
Detailed explanation-3: -One map unit is equal to 1% of recombinant frequency. Hence, map unit is equal to the crossing over between the chromosomes. A map unit is also known as centimorgan.
Detailed explanation-4: -1 cM or 1 map unit (m.u.) is equal to 1% recombination frequency.
Detailed explanation-5: -Remember: The # of recombinant offspring / total # of offspring x 100% = recombination frequency. Recombination frequency = map units = centiMorgan (cM)