dihybrid cross
a mating between individuals differing in two pairs of alleles
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
Dihybrid cross
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Dihybrid Cross Problem Set
A dihybrid cross involves a study of inheritance patterns for organisms differing in two traits.
dihybrid cross In genetics, a cross that involves two sets of characteristics. PICTURE ...
dihybrid cross
A breeding experiment in which parental varieties differing in two traits are mated.
dikaryon ...
A dihybrid cross is two monohybrid crosses
Remember that each of the individual traits in the dihybrid cross above behaves as a monohybrid cross, that is, they will produce a 3:1 phenotype ratio in the offspring.
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Dihybrid cross
Cross involving parents differing in two traits, i.e. in which two genes are segregating or segregation at two loci is being monitored.
Related Terms:
Crossing ...
dihybrid cross A genetic cross between parents that differ for two traits.
dikaryon Mycelium of some fungi that have two separate haploid nuclei in each cell.
The following dihybrid cross involves two true breeding pea plants, where two factors are looked at, the shape of the seed and the colour of the seed.
Summary of Mendelian Genetics ...
If traits assort independent of each other during gamete formation, the results of the dihybrid cross can make sense. Since Mendel's time, scientists have discovered chromosomes and DNA.
Label two chromatids with each letter. This way they can line up the pairs of homologous chromosomes during metaphase I and demonstrate all of the phases of meiosis. This leads right into a lesson on dihybrid crosses and probability.
The behavior of chromosomes during meiosis (2n → n) and fertilization (n + n → 2n) provide the structural basis for Mendel's rules of inheritance. Link to discussions of Mendel's monohybrid and dihybrid crosses.
 See also: Hybrid, Allele, Offspring, Plant, Genetics
  
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