FastPlants2SE.docx - Name: Date: Student Exploration: Fast...

Name: Date:
Student Exploration: Fast Plants
®
2 – Mystery Parent
Note to teachers and students: The Fast Plants
®
Gizmo was created in collaboration with
Wisconsin Fast Plants. The Fast Plants 2 – Mystery Parent lesson was designed as a follow-up
to the Fast Plants 1 – Growth and Genetics lesson.
Vocabulary: chi-squared test, degrees of freedom, deviation, dihybrid Punnett square,
rosette-dwarf
Prior Knowledge Questions (Do these BEFORE using the
Gizmo.)
In the Fast Plants 1 lesson you learned about two alleles for
stem color. ANL is the dominant allele for purple stems, and
anl is the recessive allele for non-purple (green) stems.
1. Two ANL / anl plants are crossed. What percentage of
the offspring plants will have purple stems? 75%
2. An ANL / anl plant is crossed with an anl / anl plant. What
Parent A
ANL anl
ANL
ANL/ANL ANL/anl
anl
ANL/anl anl/anl
Parent A
ANL anl
anl
ANL/anl anl/anl
anl
ANL/anl anl/anl
Gizmo Warm-up
It is intern Mark’s first day at the Fast Plants laboratory, and he
is eager to impress. He gathers pollen from a set of plants on
one side of the room and carefully pollinates a set of plants on
the other side. Then he goes out to lunch. When he returns,
his supervisor Pam compliments Mark on the great job he did
pollinating the flowers. “So, where did the pollen come from?”
2019

Activity A:
Creating a
hypothesis
Get the Gizmo ready :
 On the Mystery parent mode, click Reset ( ).
 Turn on Auto grow and Show hints .
Introduction: In this lesson you will look at the stem color and leaf color of Fast Plants ® . Recall
that the stem color is controlled by two alleles: ANL (purple) and anl (green). The leaf color is
controlled by the alleles YGR (green) and ygr (yellow-green, which we will refer to as “yellow”).
The ANL and YGR alleles are dominant, while the anl and ygr alleles are recessive.
Question: What do the P1 and F1 phenotypes tell you about the P2 “father” plants?
2019