问答题

两个已知作物品种P1和P2作为亲本进行杂交，测得后代的抽穗期年平均值及方差如下表：
(1)不考虑互作遗传方差。请你写出关系式、计算抽穗期的广义遗传力和狭义遗传力。
(2)在可遗传的部分，有多大比例是可以稳定遗传的抽穗期遗传的平均显性程度是多大

世代抽穗期平均值方差值

P₁ 45.47 38.57

P₂ 96.64 36.12

F₁ 64.58 18.41

F₂(F₁×F₁后代) 74.20 141.23

B₁(F₁×P₁后代) 54.60 60.73

B₁(F₁×P₂后代) 81.90 120.02

【参考答案】

(1)广义遗传力即
H²=V_G/V_P=[V......

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A commonplace in genetics is the relationship between recombination frequency and crossover value. Generally speaking, ______.

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