huh-RE-du-tee
the passing down of traits from parents to offspring
What is heredity?
The factor that an offspring receives from a parent which contains the chemical instructions for an inherited trait.
What is a gene?
The two forms of traits that Gregor Mendel discovered, one that shows up more often and one that shows up less often.
What are dominant and recessive traits?
A chart used to trace the history of traits in a family.
What is pedigree?
TRUE OR FALSE: Heredity applies to all organisms.
What is TRUE?
Genes are stored on these structures in an organism's cells.
What are chromosomes?
A trait that masks another form of that trait and shows up more often in offspring.
What is a dominant trait?
An individual who has inherited the recessive gene for a trait but does not show that trait physically (because they have also inherited a dominant gene for the same trait).
What is a carrier?
A characteristic that an offspring receives from its parent.
What is inherited trait?
Chromosomes, the structures that contain genes, are located here.
What is the nucleus of each body cell?
A trait that is hidden, or masked, by another form of the trait.
What is a recessive trait?
When both parents have the dominant trait dimples, it is possible for one of their children to have this recessive trait ONLY if the parents are carriers of the recessive gene.
What is no dimples?
Three examples of inherited human traits of the face or head.
What are dimples, hair color, eye color, (detached ear lobes, curling tongue)?
The behavior in which an animal forms a bond with another organism shortly after birth or hatching, which allows the offspring to learn behaviors of the adult.
What is imprinting?
This is the letter representation for a first-generation pea plant when a purple pea plant (PP) is crossed with a white pea plant (pp).
What is Pp ?
Blue eyes are recessive and brown eyes are dominant. This means that it is impossible for two parents with blue eyes to have a child with this eye color.
What is brown?
A behavior that is inherited and does not need to be practiced or taught by parents.
What is instinct?
The Austrian Monk who studied and discovered the basic principles of heredity by studying the flowers of pea plants.
Who is Gregor Mendel?
In pea plants, round seeds are dominant over wrinkled seeds. If round seeds are represented as R, then this is the symbol for the recessive wrinkled seeds.
What is r ?
Two parents with dimples (Dd) and (Dd) carry the recessive gene for no dimples. When they have offspring three of four children have dimples. The fourth child does NOT have dimples. This is the pedigree code for the offspring without dimples.
what is dd?