Marshmallow Meiosis: Rebops Tracy M Harper Instructor, Agribusiness& Science Technology.

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Presentation transcript:

Marshmallow Meiosis: Rebops Tracy M Harper Instructor, Agribusiness& Science Technology

What is a Rebop? A ‘animal’ made of marshmallows!  Large Marshmallows : body  Small Marshmallows : humps  Thumbtacks : Antenna  Push Pins: Eyes  Pipe Cleaners : Tail  Tooth Picks : Legs

DD = Three Body Segments Dd= Three Body Segments dd = Two Body Segments DD = Three Body Segments Dd= Three Body Segments dd = Two Body Segments MM = Three Humps Mm = Three Humps mm = 2 Humps MM = Three Humps Mm = Three Humps mm = 2 Humps AA = one antenna Aa= two antenna aa = zero antenna AA = one antenna Aa= two antenna aa = zero antenna TT = Curly Tail Tt = curly Tail tt = Straight tail TT = Curly Tail Tt = curly Tail tt = Straight tail LL = Blue Legs Ll = Blue Legs Ll = Red Legs LL = Blue Legs Ll = Blue Legs Ll = Red Legs QQ = Red Nose Qq = Orange Nose qq = Yellow Nose QQ = Red Nose Qq = Orange Nose qq = Yellow Nose EE = Three Eyes Ee = Three Eyes ee= 2 eyes EE = Three Eyes Ee = Three Eyes ee= 2 eyes

Zero Antenna

Genetic Terms Genotype: genetic makeup Phenotype: physical appearance Heterozygous: Genes are different, Dominant & Recessive Homozygous: both genes are the same

Genetic Terms Dominant Traits  Three Eyes; EE and Ee  Three Body Segments; DD and Dd  Three Humps; MM and Mm  Curly Tail; TT and Tt  Blue Legs; LL and Ll

Genetic Terms Recessive Traits  Two Eyes; ee  Two Body Segments; dd  Two Humps; mm  Straight Tail; tt  Red Legs; ll

Genetic Terms Additive Traits  Antenna AA = Zero Antenna Aa = One Antenna aa = Two Antenna

Additional Activities Choose a sire and determine the probability of the phenotypes expressed in the offspring.  Example: SIRE DAM Qq qQqqq qQqqq Genotype 50% Heterozygous Qq 50% Homozygous qq Phenotype 50% Orange Nose 50% Yellow Nose

Additional Activities Choose desirable trait  Select a Sire based on the expression of the trait Example :  Rebops with three humps grow faster  Choose a Sire that will result in the highest percentage of Rebop offspring with three humps.

Marshmallow Meiosis: Rebops Tracy M Harper Instructor, Agribusiness& Science Technology