Prelab Information Purpose Explore the law of independent assortment by examining a dihybrid cross in mice.
Time Approximately 45 minutes
Question What is the effect of the inheritance of one trait on the inheritance of a second trait?
Hypothesis If a mouse inherits a particular form of one trait, then the inheritance of the other trait
will not be affected because alleles assort independently.
Summary You will study two traits of mice: fur color and eye color. Throughout the lab:
• B represents the dominant allele for fur color (black fur).
• b represents the recessive allele for fur color (white fur).
• E represents the dominant allele for eye color (black eyes).
• e represents the recessive allele for eye color (red eyes).
Variables Independent variable: inheritance of the first trait
Dependent variable: inheritance of a second trait.

Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a. cornb. ironc. cottonseedd. vitamin a

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Chapter 11.1 & 11.2 notes section 11.1 1. every living thing has a set of ? inherited from its parents. 2. after becoming a ? , mendel spent several years studying ? and mathematics at the university of vienna. 3. during sexual reproduction, male and female reproductive cells join, a process known as ? . 4. pea flowers are normally ? , which means that sperm cells in pollen fertilize the egg cells in the ? flowers. 5. when mendel crossed plants with ? characters for the same trait, the resulting offspring had only one of the characters. 6. a ? is a specific characteristic, such as seed color or plant height, that varies from one individual to another. 7. filius and filia are the latin words for ? and ? . 8. the offspring of crosses between parents with different traits are called ? . 9.to mendel's surprise, all of the offspring had the character of only ? of the parents. 10. mendel's first conclusion was that biological inheritance is determined by ? that are ? from one generation to the next. 11. scientist calls the chemical factors that determine traits ? . 12. mendel's second conclusion is the ? . 13. the principle of dominance states that some alleles are ? and others are ? . 14. when mendel allowed the f1 plants to reproduce by self-pollination the traits controlled by ? alleles reappeared in about ? of the f2 plants in each cross.