The two alleles for a trait separate during gamete formation so each gamete carries only one.
Each organism has two copies of each factor, which separate during gamete formation so each gamete gets one. Fertilisation brings the pair back together. This corresponds to separation of homologues in meiosis I.
The law explains a 3:1 phenotypic ratio and a 1:2:1 genotypic ratio in a monohybrid F2.
The two alleles for a trait separate during gamete formation so each gamete carries only one.
Law of Segregation is one of the 54 topics in Genetics. It is rated Beginner, so it suits learners who are starting out in biology. Related topics in this area include Monohybrid Cross, Law of Independent Assortment, Genetic Variation.
Tt x Tt gives 1 TT : 2 Tt : 1 tt.
Law of Segregation is a Beginner topic, so no earlier topic is required. Other Beginner topics in Genetics that pair well with it include Heredity, Gene, Allele.
The closest topics to Law of Segregation are Monohybrid Cross, Law of Independent Assortment, Genetic Variation, Incomplete Dominance. Comparing them side by side is a good way to see how the ideas connect.
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Law of Segregation. To practise the whole of Genetics, use the Genetics quiz.
Law of Segregation: The two alleles for a trait separate during gamete formation so each gamete carries only one. Monohybrid Cross: A cross following one gene with two alleles, giving a 3:1 phenotype ratio in the F2 generation. Read both side by side and note what each one explains.
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Monohybrid Cross and explain the difference aloud. Finally, take the Genetics quiz and come back to this page for any question you miss.
A cross following one gene with two alleles, giving a 3:1 phenotype ratio in the F2 generation.
🧬 GeneticsAlleles of different genes are distributed to gametes independently when the genes lie on separate chromosomes.
🧬 GeneticsDifferences in DNA among individuals, arising from mutation, recombination and sexual reproduction.
🧬 GeneticsThe heterozygote shows an intermediate phenotype, such as pink flowers from red and white parents.
🧬 Genetics