Genetics and Mouse Traits

This video tutorial for Activity B focuses on understanding how alleles determine fur color. It introduces the concept of alleles, genes, and DNA, explaining how inherited traits are encoded. The video discusses genotype and phenotype, using a Gizmo activity to demonstrate how different alleles affect mouse fur color. It explains dominant and recessive alleles and guides students through predicting offspring genotypes using a breeding simulation.

What is the primary focus of this video?

• How to breed mice

• The history of genetics

• The structure of cells

• How alleles determine fur color

What is the structure of DNA described as?

• Double helix

• Triple helix

• Quadruple helix

• Single helix

What does it mean if an organism is homozygous for a trait?

• It has two different alleles for a trait

• It has two identical alleles for a trait

• It has no alleles for a trait

• It has three alleles for a trait

What is the genotype of a black mouse in the gizmo?

• Capital F capital F

• Capital F lowercase f

• Lowercase f lowercase f

• Lowercase f capital F

Which allele is dominant for fur color in the mice?

• Neither is dominant

• Both are equally dominant

• Capital F

• Lowercase f

What must be true for a mouse to have white fur?

• It must have no alleles

• It must have one lowercase f and one capital F

• It must have two lowercase f alleles

• It must have at least one capital F

What are the possible genotypes of offspring from two heterozygous parents?

• Capital F capital F, capital F lowercase f, lowercase f lowercase f

• Only lowercase f lowercase f

• Only capital F capital F

• Only capital F lowercase f

What does heterozygous mean in terms of alleles?

• Having two identical alleles

• Having two different alleles

• Having no alleles

• Having three alleles

What is the purpose of the breeding experiment in the video?

• To observe the possible genotypes of offspring

• To test the intelligence of mice

• To determine the lifespan of mice

• To measure the speed of mice

What will be explored in the next activity, Activity C?

• The anatomy of mice

• The history of genetics

• The diet of mice

• Predicting genotypes