Exam (elaborations)
Gizmos -Mouse Genetics (One Trait) - answer key 2022
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- Chamberlain College Nursing
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- Chamberlain College Nursing
Gizmos -Mouse Genetics (One Trait) - answer key 2022
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Name: Date:Student Exploration: Mouse Genetics (One Trait)
Directions: Follow the instructions to go through the simulation. Respond to the questions and
prompts in the orange boxes.
Vocabulary :allele, DNA, dominant allele, gene, genotype, heredity, heterozygous, homozygous, hybrid,
inheritance, phenotype, Punnett square, recessive allele, trait
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1.The image shows a single litter of kittens. How are they similar to
one another?
white fur and spots
2.How do they differ from one another?
Different colors
3.What do you think their parents looked like?
Orange, black, white, and brown colored fur and patterned
Gizmo Warm-up
Heredity is the passage of genetic information from parents to offspring.
The rules of inheritance were discovered in the 19thcentury by Gregor
Mendel. With the Mouse Genetics (One Trait) Gizmo™, you will study how
onetrait, or feature, is inherited.
1.Drag two black mice into the Parent 1 andParent 2 boxes. Click Breed
to view the five offspring of these parents.
What do the offspring look like? black furred mice
The appearance of each mouse is also called its phenotype .
2.Click Clear , and drag two white mice into the parent boxes. Click Breed several times. What is the
phenotype of the offspring now?
All offspring are white mice
3.Do you think mouse offspring will always look like their parents? Explain:
Not all the time because there are many different ways offspring can look Activity A:
Patterns of
inheritanceGet the Gizmo ready :
●Click Clear .
●Drag a black mouse and a white mouse into the
parent boxes, but don’t click Breed yet.
Question: What patterns are shown by offspring traits?
1.Predict : What do you think the offspring of a black mouse and a white mouse will look like?
some will be black and white
2.Observe : Click Breed several times. What do you see?
one white and six black
3.Observe : Drag two offspring into the Holding Cages .These mice are called hybrids because their parents
had different traits. Click Clear , and then breed the two hybrids.
What do you see now? one white and six black
4.Experiment : Turn on Show statistics . Click Breed until there are 100 offspring.
How many offspring were black? 100 How many were white? 0
5.Explore : Try other combinations of mouse parents. Write the results of each experiment in your notes.
When you have finished, answer the following questions. (Note: You can refer to the parents as “pure
black,” “pure white,” or “hybrid.”)
A. Which parent combination(s) yield only
white offspring?Both parents were white mice
B. Which parent combination(s) yield only
black offspring?Both black mice parents
C. Which parent combination(s) yield a
mixture of black and white offspring?Ff and ff
6.Challenge : Based on experiments similar to these, Gregor Mendel devised a theory of inheritance. Use
your own observations to come up with your own explanation of how a trait such as fur color is passed
down from parents to offspring. If possible, discuss your theory with your classmates and teacher.
The trait of skin color is expressed through only one set of genes and it exhibits the basic
Mendelian genetics principle of dominant and recessive genes.
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