an organism's characteristics
only expressed if two copies are present (therefore no dominant allele present)
chromosomes
an organisms genetic make up
allele
always expressed, even if only one copy is present
homozygous
heterozygous
different forms of a gene
long strands of DNA wrapped around a protein
genotype
dominant
phenotype
If the two alleles present are the same
sex cells e.g. sperm and egg
if the alleles are different
a section of DNA that codes for a particular protein
recessive
gene
gamete
