Student Exploration: Chicken Genetics
Vocabulary: allele, codominance, dominant, genotype, heterozygous, homozygous, phenotype,
probability, Punnett square, recessive, trial
Prior Knowledge Questions (Do these BEFORE
...
Student Exploration: Chicken Genetics
Vocabulary: allele, codominance, dominant, genotype, heterozygous, homozygous, phenotype,
probability, Punnett square, recessive, trial
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. The image shows a flower that was produced by crossing
a pure red flower with a pure white flower. Which do you
think is the dominant petal color: red or white? Explain.
_____________________________________________
_____________________________________________
_____________________________________________
2. How is the inheritance pattern shown by this flower different from other inheritance patterns
you have seen or studied? ___________________________________________________
_________________________________________________________________________
Gizmo Warm-up
There are many different ways traits can be inherited. Some traits are
governed by alleles that are dominant over other alleles. Other traits are
governed by alleles that share dominance. These alleles follow a pattern of
inheritance called codominance. With the Chicken Genetics Gizmo™, you
will study how codominance affects the inheritance of certain traits.
1. Turn on Show genotype. The genotype is the allele combination an
organism has. Point to the red chicken.
A. What is the red chicken’s genotype? __________________________
B. What is the white chicken’s genotype? ________________________
2. What do you think the letters F, R, and W stand for in the genotypes?
______________________________________________________
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