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Ch.5 & 6

heredirty the passing of genetic traits from parent to offsprings
dominant trait observed in the first generation when parents have diff. traits are bred
recessive trait reappares in the second generation after disappering in the first generation when parents with diff. traits are bred
gene one set of instructions for an inherited trait
allele one of the alternative forms of a gene the governs a characteristic such as hair color
phenotype an organism appearance or other detectable characteristics
genetype entire genetic makeup of an organism; also the combination of genes for one or more spacific traits
probability the likehood that a possible future event will occur in any given insance of the event
homologus chromosomes that have the same sequence of genes and the same structures
meisosis cell division during which the number of chromosomes decreases of half the original numbers by two divisons of the nucleus, which results in the production of sex cells
sex chromosomes one of the pair of chromosomes that determine the sex of an individual
pedigree a diagram that shows the occurrence of a genetic trait in several generations of family
DNA genetic material- the material that dererminds inherited characteristics
nucleatide acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base
double helix strands of DNA that looks like twisted ladder
RNA a molecule that is present in all living cells and that plays a role in protein production
ribosomes cells organells composed of RNA and protein; the site of protein
mutation change in the nucleatide- base sequence of a gene or DNA molecule
Created by: Epa08