[問題] 有關一題遺傳問題
題目是這樣的
Q :
Genes A and B are linked on the same chromosome with recombination frequency
of 20% . What will be the frequency of offspring with recessive phenotype
from a cross between individuals with AB/ab and Ab/aB genotypes ?
答案是 4 %
因為我知道 A和B連鎖 而且互換率為20%
所以Ab/ab 的配子 AB(40%) aB(10%) Ab(40%) ab(40%)
之後就不知道怎麼解了= ="
有請各位大大解答
感謝
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