nullisomic


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nullisomic

(of a mutant condition) the absence of a pair of HOMOLOGOUS CHROMOSOMES, giving a genetic complement of 2n - 2.
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Nevertheless, adjacent segregations result in gametes, which are nullisomic or disomic for one of the chromosomes involved in the rearrangement and consequently a zygote with trisomy or monosomy for one of the involved chromosomes.
Our use of three-color FISH allowed us to compare the frequencies of various disomic and nullisomic sperm within the same samples and to assess whether the disomy and diploidy errors occurred during meiosis I (X-Y-21 and X-Y-21-21) or meiosis II (X-X-21,Y-Y-21, X-X-21-21, Y-Y-21-21).
The present study was conducted to map Randomly Amplified Polymorphic DNA primers (RAPDs) on homoeologous group 1 chromosomes (especially chromosome 1B of common wheat) of wheat genotypes "Chinese Spring" (CS) (which is euploid in nature, having genomes AABBDD, 2n=6x=42) and Nullisomic Tetrasomic 1B-1A (NT 1B1A).
7D]) were selected from each cross and were test crossed with the RWA susceptible CS nullisomic 7D.
The chromosome number 54 is nullisomic, generated through loss of a pair of chromosomes from an octopioid (8x - 2).
Gigas-plants in the offspring of nullisomic dwarfs and analysis of their additional chromosome pair.
We confirmed the microsatellites approximate map location by screening the markers with a Chinese Spring nullitetrasomic line that was nullisomic for chromosome 3B.
4) and was absent from nullisomic 6D-tetrasomic 6A (missing 6D chromosomes but possesses four copies of chromosome 6A) (N6DT6A) and ditelosomic 6DS (missing the long arm of chromosome 6D; DT6DS), confirming that Imi1 is located on the long arm of chromosome 6D (Fig.
For the 4B population, plants nullisomic for chromosome 4B would be expected to express sterility because of the absence of ms1.
fatua-like behavior of the nullisomic of chromosome IV of the Sun II monosomic series also supported cultivated oat being directly descended from A.
The shriveled seeds must have resulted from fertilization of 12-chromosome female gametes that were nullisomic for both 1A and 1D.
Three types of aneuploidy were found in male-sterile plants: ditelosomic, monotelosomic, and nullisomic.