A scientist studied the traits of an unusual looking insect. She noticed that some of the insects had long antennae and some had short antennae. She separated the insects into two groups based on their antennae size and allowed them to mate only within each group. After the eggs were laid, the parent insects were removed and the eggs were allowed to develop. In one group, all the offspring had short antennae. In the other group, some offspring had long antennae, and some had short antennae.
1. Which trait is dominant, short or long antennae? Explain.
2. All the following steps could improve the experiment EXCEPT:
a) separating the insects to be mated as soon as they are hatched
b) feeding different diets to the long-antennae and the short- antennae groups
c) maintaining a constant environment for both groups
d) repeating the experimental procedure several times
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