The Punnett square is a method used to determine the genotypes from a cross between two parents.
Named after Reginald C. Punnett, the diagram is used by biologists to determine the probability of an offspring having a particular genotype.
Homozygous & Heterozygous Genes Homozygous: An organism has two identical alleles for a particular gene.
Heterozygous: An organism has two different alleles for a particular gene. |
PhenotypePhenotypes are the physical makeup of an organism, or the traits they express. These characteristics are determined my both genetic makeup and environmental factors.
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GenotypeGenotypes are the genetic make-up of an organism. These alleles determine the expression and code for particular traits or phenotypes.
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