Punnett Squares
Here's a punnett square with a heterozygous pair and a homozygous recessive pair.
Punett squares are used by geneticists to predict the genotypes of an organism. To the left is a picture with a heterozygous pair and a homozygous recessive pair. The sex cells are haploid, until they meet in fertilization, they become a zygote which is diploid. As you can see, the punnett square showed the possible traits of the offspring of these two organisms. The zygotes now hold certain traits and characteristics that determine what the offspring's genotype and phenotype will be.
A pedigree is used to track down an organisms' ancestors. With a pedigree you can see where the recessive trait shows up. From the punnett square and pedigree you see that the recessive trait is shown through a small amount of people.
A pedigree is used to track down an organisms' ancestors. With a pedigree you can see where the recessive trait shows up. From the punnett square and pedigree you see that the recessive trait is shown through a small amount of people.