Data-based questions: The two-spot ladybug
1)
The typical ladybug have 2 dots while the annulata has a more complex design.
2) The differences between the two forms are due to a single gene. If male and female
typica are mated together, all the offspring are typica. Similarly, the offspring produced
when annulata forms are mated are all annulata. Explain the conclusions that can be
drawn. [2]
Because it is a one gene difference, it can be concluded that many of the lady bugs have
similar designs because their designs are based off a single gene.
3)
The F1 hybrid has a more complicated design from their parents. It is a combination
between the two.
4)
a)
f1typica
f1annulata
f1typicca
F1typica f1typica
F1typica f1annulata
f1annulata
f1annulata f1typica
f1annulataf1annulata
b)
Typica: Hybrid: annulata
1:2:1