d
because the separate halves of the sample of Drosophila can only eat one food source
Read the passage about a Drosophila (fruit fly) experiment.
A sample of Drosophila is separated into two halves. One half is placed in a container with a starch food source. The other half of the sample is placed in a container with a maltose food source. After many generations of Drosophila are produced, the two halves of the sample are put together. The Drosophila prefer to mate only with other Drosophila had the same food source (starch with starch, maltose with maltose).
Spotted Wing Drosophila | CALS
Why does this happen?
a
because the separate halves of the sample of Drosophila cannot see each other anymore
b
because the separate halves of the sample of Drosophila form new species
c
because the separate halves of the sample of Drosophila attack each other
d
because the separate halves of the sample of Drosophila can only eat one food source
1 answer