East River High MARINE BIOLOGY 2015063c308e4b0da5168bdf261-vikayefremova-1350492993988-mouse genetics sescience.

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Student Exploration: Mouse Genetics (One Trait) Vocabulary: allele, DNA, dominant allele, gene, genotype, heterozygous, homozygous, hybrid, inheritance, phenotype, Punnett square, recessive allele, ... trait Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. The image shows a single litter of kittens. How are they similar to one another? They all have spots, though they are different spots. They have the same type of fur and the size of their ears is about the same size.. And also they are all just so cute!  2. How do they differ from one another? They differ from each other because they have different color of spots and size of spots. They have a few visible differences but they also have differences that cannot be seen only by the eyes. Like their personalities. All of the kittens have different kinds of personalities. 3. What do you think their parents looked like? Their parents probably look similar to their kittens, they might have had spots and they are from the same cat family. Gizmo Warm-up The rules of inheritance were discovered in the 19th century by Gregor Mendel. With the Mouse Genetics (One Trait) Gizmo™, you will study how one trait, or feature, is inherited. 1. Drag two black mice into the Parent 1 and Parent 2 boxes. Click Breed several times. What do the offspring look like? All the babies are with dark fur colors, no whites. Because black is a dominant color, so it produces black. The appearance of each mouse is also called its phenotype. 2. Click Clear, and drag two white mice into the parent boxes. Click Breed several times. What is the phenotype of the offspring now? The offspring of the two white mouse parents are only whites. No blacks! 3. Do you think mouse offspring will always look like their parents? Yes. Explain: Because the genes from their parents pass on to the children, so the children will look like their parents [Show More]

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