Transcript File
Location on a chromosome that contains the DNA code for a trait. • gene All the living things and nonliving things that surround and affect an organism • environment A way of acting that is pasted from parents to offspring. • instinct Process by which most cells divide. • Mitosis Stages that living things past through as they grow and change. • Life cycle Thread like structure in a cell nucleus. • chromosome Characteristics pasted from parents to offspring • Inherited trait A characteristic that appears when there is no factor present for it • Dominant Trait An egg hatches into a caterpillar, which eats, becomes a pupa, emerges as a moth, and lays eggs. This is an example of what? • Life Cycle A frog moves to a nearby pond because its own pond is drying up. What changed for the frog to cause it to move? • The environment You get a sunburn. A week later, the dead skin peels off. What process formed the new skin underneath the peeling skin? • Meiosis What do most body cells make when they go through division? • Exact copies of themselves What forms as a result of meiosis? • Gametes with half the number of chromosomes. Rosa and Rita are identical twins. That trait is a result of their environment? • • • • A. hairstyles B. brown eyes C. Tongue rolling D. unattached earlobes Tippy the cat does many things. Which behavior is an instinct? • • • • A. ringing the doorbell B. meowing along with the radio C. sleeping more hours than he’s awake. D. Running to the kitchen when a can is opened Adam can roll his tongue. His younger brother Lee cannot. Which statement explains why? • A. Adam can do it because he is older. • B. Adam has a dominant factor for tongue-rolling. • C. Lee can’t because he hasn’t practiced enough yet. • D. Lee has a dominant and recessive factor for tongue-rolling. Bob’s parents both have attached earlobes-a recessive trait. The are expecting a baby boy. What can you infer about the likelihood that Bob’s baby brother will have attached earlobes? • The baby will have attached earlobes, because two recessive traits are necessary.