Fill in the Blanks 1 - How Traits Are ControlledOnline version Chapter 3, Lesson 1: "How Traits Are Controlled". Use your textbook to help you fill in the blanks pages 138 - 147. Click the word. by Naneth Burquez 1 acquired breed genetics hybrids selective recessive heredity gene inherited dominant 1 . - The study of heredity is called . 2 . - Organisms that have inherited two different form of the same trait , one from each parent are called . 3 . - The form of a trait that can be hidden is called a trait . 4 . - A characteristic that is passed from parent to offspring is an trait . 5 . - A trait that is influenced by experience of the environment is called an trait . 6 . - A portion of a chromosome that controls a particular inherited trait is called a . 7 . - The passing of inherited traits from parents to offspring is called . 8 . - When one form of a trait masks the other form of the trait , the trait that appears is called the trait . 9 . - Mating certain organisms in order to promote offspring with desirable traits is called breeding . 10 . - Members of an animal species with similar traits that are part of a group called a .