alleles

• what is a gene?


  a segment of DNA that codes for a type of protein
• what are alleles?


  different versions of a gene
• homozygous


  same alleles
• heterozygous


  different alleles
• which allele is expressed?

  dominant
• what does dominant mean?


  expressed allele
• what is a recessive allele?


  only expressed when there are two
• what is a genotype?


  The genetic makeup of an organism, collection of alleles we have
• what is a phenotype?


  characteristics from genotype
• what is a chromosome?


  a protien that carries genetic information
• genotype


  two alleles present for a particular gene