Analyzing Traits in Fast Plant Generations Lesson Goal  By the end of this lesson, you should be able to describe the way that traits are passed down.

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Presentation transcript:

Analyzing Traits in Fast Plant Generations

Lesson Goal  By the end of this lesson, you should be able to describe the way that traits are passed down from one generation to the next.

Collecting Data  One person from each group collect your plant dish from the light area.  As a group, count the number of purple, non- purple, and/or other colored plants that you have.

Collecting Data Group # P 1 Purple Non- Purple P 2 Purple Non- Purple F 1 Purple Non- Purple F 2 Purple Non- Purple Totals

GENOTYPE : the inherited combination of alleles (the LETTERS) Ex: Dd, BB PHENOTYPE : the inherited appearance (the physical traits you see) Ex: Dimples vs.

Collecting Data

Analyzing the Data

 DOMINANT ALLELE: the trait that always shows up in the organism whenever it is present.  RECESSIVE ALLELE: the trait that is masked, or covered up, whenever the dominant allele is present. DOMINANT RECESSIVE

How do we represent alleles? We use a capital letter for dominant alleles We use a lower case letter for recessive alleles D = dominant trait d = recessive trait

How do these alleles work? B Bb bb BB Bb bb B

Analyzing the Data