Task 1 Grizzly Bear(male) and Polar Bear(female) Im stuck with Task 2
Task 2 Print Modeling Chromosome Inheritance In this task, you will model chromosome inheritance from parent to offspring for the species you created in task 1. You will use the genotypes you developed for the two parents in task 1. Estimated time to complete: 60–90 minutes You will need these materials: 4 different colors of construction paper (about 2 sheets of each color) or white paper 4 pens or markers of different colors scissors (optional) tape (optional) Stay safe! Be careful when using scissors. Recall that meiosis is the type of cell division that forms gametes, sperm, and eggs. Each parent has a pair of homologous chromosomes, and each chromosome carries one allele for a particular gene. At the beginning of meiosis, these homologous chromosome pairs have two identical sister chromatids, which contain the same genetic information. Parts of chromosome structure. To get started on this task, cut eight strips of paper—two of each color (or eight strips of white paper). Each color will represent one chromosome with its sister chromatids. Each parent will receive two different colored chromosomes. If you’re using white paper, use four pens or markers of different colors to write your genes—one color for each chromosome. Four genes with different chromosomes. Start with one parent, and separate its four pieces of paper into two chromosomes with its two identical chromatids. Using your genotypes from task 1, write down one gene on each chromosome as shown in the following image. Remember that depending on the genotype you choose, homologous chromosomes can have matching or unmatched chromosomes. The two sister chromatids in each pair have identical alleles. For example, Mother genotype: YyIRiPF Two sister chromatids in mother genotype with identical alleles. Make your chromosome pairs for the mother and father using the image as a guideline. At the end, you should have two pairs of chromosomes—with two identical chromatids each—for each parent. Part A: Modeling Meiosis In meiosis, crossing
