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science chapter 3

TermDefinition
heredity is the passing of physical characteristics from parents to offspring hint hint heredity
trait a specific characteristic hint hint trait
genetics mendel experiments with thousands of peas hint hint genetics
fertilization sperm cells and a egg joins together hint hint fertilization
purebred organisms offspring of many generations that have the same form of a trait hint hint purebred
gene factors control trait hint hint gene
allele are the different forms of a gene hint hint allele
dominate allele is one whose trait always shows up in the organism when the allele is present hint hint dominate allele
recessive allele on the other hand is hidden whenever the dominant allele is present hint hint recessive allele
hybrid organisms has two different allele for a trait hint hint hybrid
probability a number that describes how likely it is that an event will occur hint hint probability
punnett square is a chart that shows all the possible ways alleles can combine in a genetic cross hint hint punnett square
phenotype is a physical appearance hint hint phenotype
genotype organisms alleles hint hint genotype
homozygous an organism that has two identical alleles for a hint hint homozygous
heterzygous an organism that has two different alleles for a trait hint hint heterzygous
incomplete dominance occurs when one allele is only partially dominant hint hint incomplete dominance
codominance occurs when both alleles for a gene are expressed equally hint hint codominance
multiple alleles which means that three or more possible alleles determine the trait hint hint multiple alleles
polygenic inheritance occurs when more then one gene affects a trait hint hint polygenic inheritance
meiosis is the process by which the number of chromosomes is reduced by half as sex cells form hint hint meiosis
Created by: pas201