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4.2,4.3,&4.4 science
Term | Definition |
---|---|
probability | a number that describes how likely it is that an event will ocur |
punnett squarek | a chart that shows all the possible combinations of alleles that can result from a genetic occur |
phenotype | its physical appearance |
genotype | its genetic makeup or allele combinations |
homozygous | an organism that has two different alleles for a trait |
codominance | alleles are neither dominant nor recessive |
meiosis | the process by which the number of chromosomes is reduced by half to form sex cells--sperm and eggs |
messenger RNA | copies the coded message from the DNA in the nucleus, and carries the message to the ribosome in the cytoplasm |
transfer RNA | carries amino acids ti the ribosome and adds them to the growing protein |
mutation | any change in a gene or chromosome |