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SCIENCE 9 NAME: ______________ ~~Bunny Babies LAB PART A~~ DATE:_______________ CLASS: 90__ At fertilization the genetic traits of an individual are determined. Fertilization occurs when gametes, an egg and a sperm, join together. Each of the cells contributes a set of traits to the offspring. The task: In this activity you will use coins to represent the egg and sperm. The parents are heterozygous for each of the possible traits for our bunny baby. You will flip the coins to determine which trait your bunny baby will inherit. You will then draw a model of your bunny baby. Procedure: 1. Decide which coin will represent the Female gamete and which coin will represent the Male gamete. 2. For each of the following traits, flip each coin one time. Record “H” for heads and “h” for tails. This will determine the genotype of your Bunny Baby. 3. Record the Phenotype for each of the traits on your Trait Sheet. 4. Use your phenotypes to put together a model of your Bunny Baby. Bunny Baby Phenotypes: Trait HH Hh Hh Head Shape Pointed end of egg Pointed end of egg Pointed end of egg up down down Ear Color Green Red Yellow Ear Shape Ears pointed at the Ears pointed at the Ears rounded at the top top top Long (5 cm of more) Medium (more than 3 Short (less than 3 and less than 5 cm) cm) Ear size Eye Color Brown Brown Pink Nose Shape Upside down triangle Upside down triangle Oval on Side Mouth Shape Smile Smile Frown Whiskers Straight Straight Curly Sex Female, Hair Bow Male, Bow tie Trait Sheet #1 Record your Bunny Baby genotype and phenotype using this chart. Trait Female Head Shape Ear Color Ear Shape Ear Size Eye Color Nose Shape Mouth Shape Whiskers Sex (only flip male coin) H Male Phenotype You have just produced a bunny baby! Now do it again! Create a second baby bunny by using the second trait table provided on the reverse of this page. After you do this, answer the following questions: Now that you have created two offspring answer the following questions. 1. Did you simulate sexual or asexual reproduction? Explain. _________________________________________________________________ _______________________________________________ 2. What sex offspring did you produce? How do you know? _________________________________________________________________ _______________________________________________ 3. Do the siblings (brothers/sisters) look similar? Explain. _________________________________________________________________ _______________________________________________ 4. Are your bunnies twins? Explain why or why not? _________________________________________________________________ _______________________________________________ 5. What would the parents look like? Draw a sketch of the mother or father or her/his traits. Keep in mind that the parents’ genotypes are heterozygous (Hh) for each trait! Sketch of mother or father List of traits for mother or father Trait Sheet Record your Bunny Baby genotype and phenotype using this chart. Trait Female Head Shape Ear Color Ear Shape Ear Size Eye Color Nose Shape Mouth Shape Whiskers Sex (only flip male coin) H Male Phenotype Sketch your Bunny Babies Below: Bunny Baby #1 Bunny Baby #2 1 Distinguish between sexual and asexual reproduction in representative organisms (305-2) Select and integrate genetics information from various sources and apply criteria for evaluating evidence and sources of information. (209-5, 210-8) 1+ 2 2+ 3 3+ 4