[问答题]
In guinea pigs (Cavia por
*fo) 17fdka dl+7pntrcyjf: .cellus), long hair (L
e e:xcfs./rx8fxmu xx)3i7)b) is dominant to short hair (l), and curly hair (C) is dominant to straight hair (c). A test cross was carried out between
x f)xr.ef)78bxmc/xuse:i3 x male heterozygous long, curly-haired guinea pigs and female short, straight-haired guinea pigs and a chi-squared test (χ2) was carried out on the offspring.
1.1.Using a genetic diagram, state the expected ratio of the cross between the two parents.
1.2.Identify the recombinants.
2.1.Calculate the ratio of the observed phenotypes.
2.2.Suggest a reason for the difference between the expected and observed ratios.
3.1.State the null hypothesis in this study.
3.2.Deduce with reasons whether the null hypothesis should be accepted.
