1. Supplies 1 paper clip 1 construction paper 1 traits key A recipe for traits directions sheet Small rubric 2 strips of each color paper ½ white sheet of paper Glue stick

2. Warm-up 1. What is the type of allele that only affects the phenotype in the homozygous condition? 2. What type of allele masks the expression of the recessive allele? 3. What is the term for the specific alleles of an individual for a particular trait? 4. What is the term for the appearance of the organism, as determined by the genotype? 5. If two individuals have a certain phenotype, such as tall pea plants, does that mean they must have the same genotype?

3. Dog Genetics The entire chain of paper represents a _________________. Chromosomes are composed of _________________. The bases of DNA code for genetic information, and are represented by four different symbols. Sections of DNA are called ______________, represented by each strip of colored paper. _______________ determine the traits of an organism. If one symbol is changed in a gene, the resulting trait (is OR is not) changed because ____________________________________________________.

4. Dog Genetics The entire chain of paper represents a chromosome. Chromosomes are composed of DNA. The bases of DNA code for genetic information, and are represented by four different symbols. Sections of DNA are called Genes. Genes determine the traits of an organism. If one symbol is changed in a gene, the resulting trait IS (is OR is not) changed because ____________________________________________________.