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DNA & Genetics Vocab

DNA & Genetic Vocab

QuestionAnswer
cells the basic building blocks of living organisms
nucleus the control center of the cell; it contains your DNA
DNA deoxyribonucleic acid; it consists of strands of molecules that code and store genetic information. It is located in the nucleus of the cell. It's like a blueprint for your body.
Watson & Crick scientists who discovered the structure of the DNA molecule
double helix the shape of a DNA molecule; it looks like a twisted ladder
heredity the passing of traits from parents to offspring
genetics the science of heredity
gene the section of DNA that codes for one specific trait
trait characteristics such as leaf shape or eye color that are passed from parent to offspring
dominant trait a genetic trait that expresses itself more strongly than another trait
recessive trait a genetic trait that is hidden by a dominant trait
ethics the process of thinking & discussing by which we decide on issues of right (good) or wrong (bad) as applied to people and their actions. Science & technology determine what we CAN do. Ethics helps us decide what we SHOULD do.
phenotype The external appearance of an organism. What it looks like.
genotype The genetic makeup of an organism
Gregor Mendel Austrian monk known as the father of genetics
Punnett square A chart that shows all of the possible combinations of alleles that can result from a genetic cross.
allele One version of a gene (Such as the dominant allele or the recessive allele.)
inherited To receive a trait from your parents.
characteristic A quality or feature that is typical of or serves to distinguish an organism or group from others.
species A group of similar organisms that can reproduce together and produce fertile offspring.
offspring The young of a person, animal, or plant.
generation A group of individuals born at about the same time.
sexual reproduction A form of reproduction that requires two parents and results in offspring who are genetically different from their parents.
asexual reproduction A form of reproduction that requires only one parent and results in offspring who are genetically identical to that parent.
clone an organism that is genetically identical to the organism from which it was produced
fertilization the uniting of a sperm cell with an egg cell to form a cell that will develop into a new individual
mutation a change in a gene or chromosome
homozygous an organism with 2 identical alleles for a trait
heterozygous an organism with two different alleles for a trait
hybrid an organism with a dominant allele and a recessive allele for a trait
Created by: Triana Silliman on 2007-02-18



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