 Reebop Activity SBI 3U February 19, 2013

Summary  What were some of the observable differences between our Reebop babies and Reebop parents?  What were some of the observable differences between the Reebop babies?

Terminology  Genotype : The genetic makeup of an organism (The code for our Reebop)  Phenotype : The appearance of the trait in the organism (What does our Reebop look like)  Allele : A variation of a gene that controls a trait  Since everyone has two copies of each chromosome, a person also has two alleles for each trait, one from each parent

Terminology  Homozygous : having two alleles that are identical to each other  Heterozygous : having two alleles that are different from each other  Dominant : allele that determines the trait that is expressed in a heterozygous individual  Recessive : allele that is present, but not expressed in a homozygous individual  Example:  LL: Homozygous blue legs  Ll: Heterozygous blue legs  ll: Homozygous black legs  What is the dominant allele?

Variation  Why do our Reebop babies look different from our Reebop parents, as well as each other?  Law of Segregation: states that two alleles from a trait or gene separate during meiosis  Law of Independent Assortment: states that genes that separate during meiosis do not influence each others inheritence