How much phenotypic varia on do you Þnd in the parents of your crosses?
Mendelian Gene cs
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Ques ons
1. a) How much genotypic varia on do you Þnd in the randomly picked parents of your cross-
es? How much in the o spring?
b) How much phenotypic varia on do you Þnd in the parents of your crosses? How much
in the o spring?
2. a) What is the ra o of phenotypes (yellow kernel color : blue kernel color) in the 20 o –
spring of your Þve crosses?
b) If you were to run this experiment 1000 mes, rather than just Þve mes, what would
you expect the ra o of phenotypes to be in the o spring?
c) Is the ra o of observed phenotypes the same as the ra o of predicted phenotypes in the
o spring? Why or why not?
3. Organisms heterozygous for a recessive trait are o en called carriers of that trait. Explain
what this means.’