Variation in DNA content was densitometrically analyzed in three sections (E; A4f-g; E; A5d-g; F; B3h) of the chromosome EF of IV instar larvae of Chironomus riparius (syn: C. thummi) Meigen 1804 from a heavy metal polluted Piedmont station (Santena, near Turin). The three sections...
A. rhodensis males have only one X chromosome (XO), whereas females and hermaphrodites have two (XX). The A. rhodensis X chromosome is unusual: it does not recombine in hermaphrodites and is transmitted from father to son. The mechanism that controls the production of females versus ...
Sperm chromosome complements were analysed in three men heterozygous for reciprocal translocations. A total of 695 sperm were karyotyped after in vitro penetration of hamster oocytes: 275 sperm from t(7;20)(q33.2;p13), 268 from t(3;11)(q25.3;q25) and 152 from t(15;22)(q26.1;q11.2)....
Polymorphism in chromosome pair no. 3 of Rattus norvegicus was found in laboratory strains and wild rats. Some of the animals had a subtelocentric pair no. 3, while others had a telocentric pair no. 3. 14 inbred strains were classified ... TH Yosida,K Amano - 《Chromosoma》 被引量: ...
Therefore, while the current two-sex model used for land plants assumes that only the sexual states of male and female are to be present in a given species, this article will question that assumption. Based on an examination of the plant life cycle two new models of plant sexual reproduction...
A Chromosome Bin Map of 16,000 Expressed Sequence Tag Loci and Distribution of Genes Among the Three Genomes of Polyploid Wheat 来自 NCBI 喜欢 0 阅读量: 111 作者: Qi,L L. 摘要: Because of the huge size of the common wheat (Triticum aestivum L., 2n = 6x = 42, AABBDD) genome of...
The bacterium’s genome consists of a single chromosome, about 4.6 million DNA units long, and three small rings of DNA called plasmids. In the 660 years since the Black Death struck, only 97 of these DNA units have changed and only a dozen of these changes occur in genes and therefore ...
A. J. H. HamersDepartment of NeurologyDevelopmental Medicine & Child Neurologyde Rijk-van Andel JF, Catsman-Berrevoets CE, van Hemel JO, Hamers AJH (1991) Clinical and chromosome studies of three patients with Smith-Magenis syndrome. Dev Med Child Neu- rol 33:343-347...
Ramella, C.A. Robotti, G. Sella, Chromosome analysis of three species of Patella (Archaeogastropoda), Genetica (77) (1988) 97-103.CERVELLA, P., RAMELLA, L., ROBOTTI, C.A. & SELLA, G. 1988. Chromosome analysis of three species of Patella (Archaeogastropoda). Genetica, 77: 97-...
Meiosis is at the core of sexual reproduction and alterations to its program can have dramatic effects. In this study, we investigate the segregation pattern of the X chromosome in Auanema rhodensis, a three-gendered nematode. This species has an atypical pattern of X chromosome segregation durin...