MeiosisMitosisNuclear matrixPairing of homologous chromosomes is an essential feature of meiosis, acting to promote high levels of recombination and to ensure segregation of homologs. However, homologous pairing
SOME recent claims in connexion with the cytological explanation of meiosis raise very important questions when taken in conjunction with morphological development. This matter is brought to a climax by the recent report in NATOBE of a paper read by Prof. C. L. Huskinsto the Royal Society of...
The degree of preferential pairing of homologous chromosomes was estimated in a series of tetraploid hybrids of Lolium temulentum x Lolium perenne by means of cytological and genetic analyses. The correlations between the frequency of bivalents at first metaphase of meiosis in the hybrid tetraploids ...
Pairingdescribes the side-by-side alignment ofhomologous chromosomesat a distance. Homologs are paired in nonmeiotic (somatic) cells in a few organisms, such as the fruit flyD. melanogaster,but not in vertebrates. The earliest pairing events in meiosis involve a tendency ofhomologous chromosometerri...
(b)The two visible chromatids of a chromosome during pachytene of meiosis-I is termed___(c)A group of four homologous chromatids (two dyads)is termed as___(d)The two chromatids of two homologous chromosomes(bivalent)are termed as___(e)The separation of homologous chromosomes during diplo...
THE statement that ``only two homologous chromosomes can pair at one time'' is one of the most basic of cytogenetic principles. It is founded on observations of meiosis in triploid and tetraploid organisms1-7 which have suggested that if three homologues are present, they will occur as a ...
Step-by-Step Solution:1. Understanding the Question: The question asks for the term that describes the pairing of homologous chromosomes during the zygotene stage of prophase I in meiosis.2. Iden
英文: Pairing of homologous chromosomes (synapsis) commences at one or several points on the chromosome and is clearly seen during PACHYTENE of meiosis I.中文: 同源染色体两两成对平行靠拢,这一现象也称联会,联会发生在染色体的一点或多点上,可以在减数第一次分裂的粗线期观察到。
英文: Pairing of homologous chromosomes (synapsis) commences at one or several points on the chromosome and is clearly seen during PACHYTENE of meiosis I.中文: 同源染色体两两成对平行靠拢,这一现象也称联会,联会发生在染色体的一点或多点上,可以在减数第一次分裂的粗线期观察到。
4.The stage in prophase of meiosis during which homologous chromosomes become paired.偶线期减数分裂的前期阶段,在此期间异体同型的染色体配对 5.Influence of Gossypol on Chromosome Pairing in Spermatocytes of Male Mice;醋酸棉酚对小鼠精母细胞中染色体配对行为的影响 6.Physical Structure and Regulating Mechan...