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Project: Create-a-Critter Name: ____________________ Your task is to create an imaginary species with a set of genes that will govern the appearance of members of that species. Your creature species will carry at least 5 inherited traits, but each one following a different set of heredity rules. o Single Allele Traits (complete dominance) o Co-Dominance o Incomplete Dominance o Sex-Linked Traits o Multiple Allele Traits You will create a booklet that profiles your species. It will include: -a description of your species: where it lives, how it interacts, perhaps how it evolved? -definitions of each trait, and explanations of how they’re inherited -a family of critters who demonstrate inheritance patterns -some practice questions involving your species. How will we proceed? 1. Invent a species. Brainstorm traits, and match them to inheritance patterns 2. Create a “dictionary” of traits (see below). Include definitions of each type. 3. Create 2 parents and a child. Analyze the inheritance 4. Create questions & answers about your species 5. Create an introductory paragraph to put your critter in context, complete with environment, needs & strengths. Your dictionary should include (for each trait – do this 5 times!) o Identify and explain the inheritance pattern. o List the possible genes (alleles) a creature could get. o List all the possible genotypes for an individual of this species. Identify and illustrate the matching phenotypes. (if several genotypes give the same phenotype, you can draw one picture). Sample dictionary section for a Dominant/Recessive Trait One genetic trait in this species is body shape. Two alleles exist for this trait. Allele (B) is dominant, and makes the body shape round. Allele (b) is recessive and makes body shape a pear. The term dominant means that if a “B” is present, it will over-power a “b” and make the body round. The body will be pear-shaped only if two recessive alleles (bb) are present. The possible genotypes and phenotypes in this species are: BB and Bb bb Things to note: For the sex-linked trait there are 5 possible genotypes. There are also more than 3 genotypes for a multiple allele trait. Draw & list ALL possibilities. Your Family Inheritance should look like this: 1. Create 2 individuals of your critter species, one male and one female. Assign each one a full genotype (5 pairs of letters). Draw both of these critters, with phenotypes that match the genotypes. Is this section complete? You should have: -The full genotype. Ex: Aa, BB… (for 5 traits) -One male, one female -A picture whose traits match the genes given. Double-check your work! 2. If your two critters from question 2 were to mate, give ONE of the possible genotypes for the offspring. Draw this new critter. Is it complete? -Give the full genotype -make sure this critter has genes that could have come from the parents -check that the picture matches the genotype. 3. Create 4 questions about the genetics of your creature species for a classmate to answer. At least two of them should require the use of a Punnett Square. Include an answer key for these questions on a separate piece of paper. Consider questions about: From these parents, what chance do the children have of….? For this child… could its parent look like…? Which genes would make you look this way? With this genotype, what will you look like? Can you come up with a question that requires deeper thought/analysis? Level 1 Some of the 5 inheritance patterns are missing -orPatterns are described incorrectly A significant number of the genotype options are missing or incorrect. You have not matched genotypes (dictionary, parents, baby) to correct phenotypes. Baby’s genotype was impossible to inherit. Level 2 You have applied the pattern, but you have not explained it well enough to make sense to an outside reader. Most of the genotype options are present & accurate Most of the genotypes have been properly converted to phenotypes Minor mistakes in genotype transfer. You do not have reflective questions that test inheritance Some of your Q & A are unclear, confusing, or contain small errors. Your visual and written work are not up to presentation standards. Your work looks like a rough draft. Your finished work is difficult to read and interpret. It can be confusing or hard for your audience to understand. Level 3 Inheritance pattern is clearly explained. The trait chosen works with this inheritance pattern. All genotype options are present & accurate You have listed all possible genotypes and properly converted each one to a phenotype. All 10 alleles in the baby could have come from the mating of these 2 parents. You ask a variety of questions that require people to understand the rules of inheritance. Your answer key is correct. Your finished project is clear, organized, and pleasant to look at. You’ve communicated the science effectively. Level 4 You have created a context for your creature. You have explained why certain traits have evolved over time in response to the environmental conditions. You have used your creature’s traits to suggest some ecological interactions/significance for your species. It makes sense for these higher-level ideas to be incorporated in a “speciesprofile” paragraph, and also embedded into the questions & answers