Trace flowering-plant crosses across parental, F1 and F2 generations in IB Biology HL D3.2.2, and predict inheritance ratios such as a pea test cross’s 1:1 flower-colour outcome.
A pea plant that is homozygous for purple flowers is crossed with a pea plant having white flowers and the descendants are all plants with purple flowers. One of these F1 plants is then crossed with a pea plant having white flowers. In the resulting offspring, what can be expected?
100 % of plants with purple flowers
100 % of plants with white flowers
75 % of plants with purple flowers, 25 % with white flowers
50 % of plants with purple flowers, 50 % with white flowers
D