activity is a "field exercise" to help students
understand how selective breeding works and how it simulates
Q/A Response sheet for
Procedures: Students are divided into interview
teams. Each team is assigned to interview a farmer, a plant breeder or
nurseryman, and a breeder of purebred racehorses, or cats, or dogs, or
whatever species applies to your immediate environment.
the person to find out:
- which bodily
features and functions are considered favorable and are being selected
- how the animals
or plants are selected (is the emphasis on the selecting males,
females, or both for the desired features) and why.
- for plant
breeders, students should learn the mechanics of how pollen is
collected and transferred. For asexual propagation of plants (as in
use of cuttings, students should explain how that might change the
gene frequency of desirable traits -- which only would occur if the
cuttings grow to produce fertile seeds). In the case of hybrid plants,
students should explain why gene frequency of desired traits will not
increase (because most plant hybrids are sterile).