Greenhouse - Introduction to Genetics Part 2

Fill in the blanks. In genetics, we have two forms of a gene which is called an allele. R is an example of a dominant allele and r is an example of a recessive allele. When the letters are the same size they are called homozygous. When the letters are different sizes it is called heterozygous. The genotype is letters while the phenotype is a description. A ratio is a set of numbers which in punnett squares must add up to four. Matching Terms. Match one from the left to one to the right. Homo Same Mono One Genotype Two letters Dominant Capital Letters Phenotype What you see Recessive Lowercase Letters Genotypes Place the right genotypes in the right location Dominant Homozygous JJ MM CC Recessive Homozygous gg pp aa Dominant Heterozygous Rr Nn What is the correct genotype ratio? Big Big: Big Small: small small Dominant: recessive Practice WriteHeterozygous or Homozygous for each of the four inner boxes. Homozygous Heterozygous Heterozygous Homozygous