dihybrid


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Related to dihybrid: trihybrid

di·hy·brid

(dī-hī'brid),
The offspring of parents differing in two characters.
[G. di-, two, + L. hybrida, offspring of a tame sow and a wild boar]

dihybrid

(dī-hī′brĭd)
n.
The offspring of parents that are each homozygous for different alleles of two genetic loci.

dihybrid

[dī′hī′brid]
Etymology: Gk, di, twice; L, hybrida, mongrel offspring
pertaining to an individual, an organism, or a strain that is heterozygous for two specific traits, that is the offspring of parents differing in two specific gene pairs, or that is heterozygous for two particular traits or gene loci being followed.

dihybrid

  1. an organism that carries two different ALLELES of one gene and two different alleles of another gene. For example, character A (controlled by alleles A 1 and A2) and character B (alleles B1 and B2 ). The dihybrid would have the genotype A1A2 B1B2, i.e. a double HETEROZYGOTE.
  2. (of a cross) having two parents that have been mated to produce dihybrids that are then also mated. A single dihybrid plant is self-fertilized (see SELF-FERTILIZATION). MENDEL formulated his law of INDEPENDENT ASSORTMENT from the results of a dihybrid cross involving pairs of contrasting characters in the pea plant.
References in periodicals archive ?
Note that the dihybrid exercises are identical to their trihybrid counterparts except for the omission of the [y.
An equivalent mating scheme for the in trans dihybrid exercise is shown in Figure 4.
However, Drosophila dihybrid linkage data can still be used in "open-ended" experiments as we point out in our book and in published articles but only for linked genes in coupled orientation.
These F1 flies were either mated together to produce dihybrid F2 data or were testcrossed to produce dihybrid testcross data.
Students routinely generate and analyze for gene linkage the F2 generation of Drosophila dihybrid crosses using chi-square analysis but do not map the genes if they are determined to be linked (College Board, 2001; Mertens & Hammersmith, 2007; Scott, 2001).
Table for determining map distance between two linked genes in a dihybrid cross.
Possible Answer: For example, in a dihybrid cross (AaBb x AaBb), the chance of any offspring showing the dominant trait at both loci can be calculated using these rules.
Students are not told a priori which experiment they are conducting, only that they are analyzing the results of one of the three possible Mendelian dihybrid crosses.