Results 51 to 60 of about 343,749 (184)

Male meiosis, morphometric analysis and distribution pattern of 2× and 4× cytotypes of Ranunculus hirtellus Royle, 1834 (Ranunculaceae) from the cold regions of northwest Himalayas (India)

Comparative Cytogenetics, 2011
In this study, we examined the chromosome number, detailed male meiosis, microsporogenesis, pollen fertility and morphological features and distribution of 2× and 4× cytotypes of Ranunculus hirtellus Royle, 1834.
Puneet Kumar, Vijay Singhal
doaj   +1 more source

Irr1/Scc3 Cohesin Interacts with Rec8 in Meiotic Prophase of Saccharomyces cerevisiae [PDF]

, 2011
The meiotic cohesin complex of S. cerevisiae shares with the mitotic one the Irr1/Scc3, Smc1, and Smc3 subunits, while the meiosis-specific subunit Rec8 re-places mitotic subunit Scc1/Mcd1.
Cena, Agata, Kurlandzka, Anna, Agata Cena, Piotr Kowalec, Plochocka, Danuta, Danuta Płochocka, Kowalec, Piotr, Anna Kurl   +7 more
core  

Structure of the hDmc1-ssDNA filament reveals the principles of its architecture [PDF]

, 2010
In eukaryotes, meiotic recombination is a major source of genetic diversity, but its defects in humans lead to abnormalities such as Down's, Klinefelter's and other syndromes.
Dmitry V Bugreev, Julie Hodgkinson, Yuriy L Chaban, Bugreev, DV, Orlova, Elena, Orlova, EV, Hodgkinson, J.L., Orlova Elena V., Chaban, Y.L., Bugreev, D.V., Andrei L Okorokov, Chaban Yuriy L., Okorokov, AL, Elena V Orlova, Okorokov, A.L., Hodgkinson, J, Bugreev Dmitry V., Chaban, YL, Okorokov Andrei L., Mazin, AV, Hodgkinson Julie, Mazin, A.V., Alexander V Mazin, Mazin Alexander V.   +23 more
core   +2 more sources

Meiotic behaviour and morpho-phenological variation in cut stock (Matthiola incana L.) flower

Folia Horticulturae, 2017
Morpho-phenological and meiotic studies were performed in twelve cultivars of Matthiola incana. All of the cultivars were diploid (2n = 2x = 14) with basic chromosome number x = 7.
Irani Sepideh Famil, Arab Mostafa
doaj   +1 more source

Diversity and abundance of the abnormal chromosome 10 meiotic drive complex in Zea mays [PDF]

Heredity, 2013
Maize Abnormal chromosome 10 (Ab10) contains a classic meiotic drive system that exploits asymmetry of meiosis to preferentially transmit itself and other chromosomes containing specialized heterochromatic regions called knobs. The structure and diversity of the Ab10 meiotic drive haplotype is poorly understood.
Kanizay, Lisa B., Pyhäjärvi, Tanja, Lowry, Elizabeth G., Hufford, Matthew B., Peterson, Daniel G., Ross-Ibarra, Jeffrey, Dawe, R. Kelly   +6 more
openaire   +3 more sources

Granulosa cell mevalonate pathway abnormalities contribute to oocyte meiotic defects and aneuploidy

, 2023
Source Data of "Granulosa cell mevalonate pathway abnormalities contribute to oocyte meiotic defects and aneuploidy"THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Liu, C (via Mendeley Data)
core   +1 more source

Meiotic behavior of several Brazilian soybean varieties

Genetics and Molecular Biology, 2000
Despite the importance of soybeans little cytogenetic work has traditionally been done, due to the small size and apparent similarity of the chromosomes. Fifteen soybean [Glycine max (L.) Merrill] varieties adapted for cultivation in two distinct regions
Bione Nilton Cesar Pires, Pagliarini Maria Suely, Toledo José Francisco Ferraz de   +2 more
doaj  

Chromosomal Roadblocks in Male Fertility: Mechanisms, Risk Factors and Syndromes

Medicina
Male infertility affects nearly 15% of couples worldwide, with chromosomal abnormalities representing a major underlying cause. This review explores how numerical and structural chromosomal anomalies, along with environmental exposures, lifestyle factors,
Achilleas G. Mitrakas, Christina-Angelika Alexiadi, Sofia Gargani, Triantafyllos Alexiadis, Sofia-Panagiota Alexopoulou, Olga Pagonopoulou, Maria Lambropoulou   +6 more
doaj   +1 more source

Meiotic chromosome behaviour in Cenchrus ciliaris

Bothalia: African Biodiversity & Conservation, 1998
A basic chromosome number of x = 9 has been confirmed for Cenchrus ciliaris L. Polyploidy is common and levels vary from tetraploid to hexaploid. Aneuploidv is reported for a single specimen, where two chromosomes of a single genome were lost.
N. C. Visser, J. J. Spies
doaj   +1 more source

Meiotic chromosome organization and its role in recombination and cancer

, 2023
Chromosomes adopt specific conformations to regulate various cellular processes. A well-documented chromosome configuration is the highly compacted chromosome structure during metaphase.
Morgan, C., Smith, G. R., Lambing, C., Hosoya, N., Nayak, A.   +4 more
core   +1 more source