Cycle 3 N.W. Vocab Flashcards

Question	Answer
alleles	The different forms of a gene that are located on specific positions of a chromosome.
codominance	A condition in which neither of two alleles of a gene is dominant or recessive.
dominant	An allele whose trait always shows up in the organism when the allele is present.
DNA	Deoxyribonucleic acid; the genetic material that carries information about an organism and is passed from parent to offspring.
gene	A segment of DNA on a chromosome that codes for a specific trait.
genetics	The scientific study of heredity
genotype	An organism's genetic make-up or allele combinations.
chromosome	A threadlike strand of DNA that carries the genes determining heredity.
heredity	The passing of traits from parents to offspring
heterozygous	Having two different alleles for a trait.
homozygous	Having two identical alleles for a trait
hybrid	An organism that is heterozygous for a particular trait; An organism that has 2 different alleles for a trait
meiosis	The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half
Phenotype	An organism's physical appearance, or visible traits.
Purebred	An organism that always produces offspring with the same form of a trait as the parent.
recessive	An allele that is masked when a dominant allele is present.
trait	A characteristic that an organism can pass on to itsoffspring through its genes.

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	Created by HLandgraff almost 12 years ago